Ecostars
Ecostars is an AI-native ESG platform built for hotels and hotel groups. It certifies sustainability performance from real consumption data, unifies meters, invoices and PMS feeds, benchmarks properties, and generates audit-ready CSRD reports.
What is Ecostars?
Ecostars is a Spanish B2B software platform that handles the whole sustainability and ESG mandate of a hotel, from first measurement to regulatory disclosure. The marketing site presents it as the only AI-native platform that unifies and acts on a hotel's ESG data, while the working application runs separately as "Ecostars SMS". The product is organised around four blocks: certification, data aggregation, continuous improvement and reporting.
The certification is what most hotels meet first. An algorithm awards eco-stars based on measured performance — water, energy and more — weighted for the property's size, location and specific characteristics. It is fully digital, involves no checklist and no auditor walking the property, and is valid for two years. Hotels already holding a GSTC or Travalyst certificate can migrate it, and the resulting seal can be displayed on Booking.com and other OTAs.
The data layer is what makes that possible at scale. Ecostars connects utility meters, automatically captures invoice data, and pulls from the PMS, guest reviews and employee feedback. Its proprietary IoT is described as the first global tool to measure and control supplies and waste in real time across one or several hotels, with no data entry required. On top of that sit peer benchmarks, forecasting, science-based or custom targets, drift alerts and a built-in PMO workspace for sustainability plans. The reporting block covers double materiality, CSRD datapoints, Scope 1, 2 and 3 footprints and reports broken down by period, country, brand or business unit.
The company was founded in Madrid in 2021 and remains a team of nine. It claims 2,500+ certified hotels across 50+ countries, more than one million ESG data points and two million properties listed, which it calls the largest hotel ESG database in the world. Third-party AI engines — OpenAI, Llama and Gemini — were integrated in 2024. Ecostars is recognised by UN Tourism, is a GSTC member with GSTC-Recognized standards, holds Travalyst recognition and B Corp certification, and is partly owned by SETT, a Spanish public entity.
What it does
- Certify a hotel's sustainability performance from real consumption data, with no checklist and no on-site auditor
- Generate CSRD-compliant reports aligned with ESRS, GRI and the SDGs, exportable in DOC or XBRL
- Calculate a full carbon footprint across Scopes 1, 2 and 3
- Connect meters, invoices, PMS and guest reviews into one structured ESG data layer
- Monitor electricity, water, energy and waste in real time through the proprietary IoT layer
- Benchmark a property over time and against comparable hotels, then set and track targets
- Run a documented double materiality assessment through automated workflows
When to use Ecostars / When not to
A quick filter to help you decide if Ecostars is the right fit.
When to use Ecostars
- Sustainability and ESG managers in hotel chains who have to consolidate figures across dozens of properties
- Independent hotels starting from scratch, with no in-house ESG expertise and no reporting history
- Finance and compliance teams preparing CSRD disclosures, double materiality assessments and ESRS-aligned statements
- Revenue and commercial managers who want a sustainability seal displayed on Booking.com and other OTAs
- Hotels already certified under GSTC or Travalyst that want to migrate an existing certificate onto one platform
When not to use Ecostars
- Any organisation outside hospitality: the data model, the benchmarks and the certification are hotel-only
- Teams that need a mobile app, since neither an iOS nor an Android application exists
- Developers looking to build on top of the data, as no public API documentation is published anywhere on the site
- Buyers who expect self-service checkout: the LITE, PRIME and MAX plans are ordered by email and priced case by case
- Procurement or legal teams that require a published DPA, a subprocessor list and a stated hosting jurisdiction before signing
How to use Ecostars
A typical end-to-end flow, from setup to results.
- Start the free preliminary analysis from the certification page — no prepayment and no card details are requested
- Identify your property through the intake form at forms.ecostars.ai, which asks for the hotel's basic data
- Review the results, which score your hotel against a benchmark of real, comparable properties
- Decide whether to continue to the paid, legally valid certification, which is issued fully online
- Log in to the platform at sms.ecostars.org and choose whether you are working on a single hotel or a chain
- Connect your data sources: utility meters and IoT sensors, invoice capture, the PMS, guest reviews and employee feedback
- Migrate an existing GSTC or Travalyst certificate onto the platform if you already hold one
- Work through the ESG Assistant, real-time monitoring, double materiality and CSRD tabs to plan and execute improvements
- Pick a LITE, PRIME or MAX plan through the pre-filled email that the Solutions page opens, or pay by card in the platform
- Publish your certification on Booking.com and other OTAs, and contact the team by email or WhatsApp when you need help
Pros & Cons
Pros
- Genuinely vertical: the benchmarks, reference data and certification logic are built for hotels rather than adapted to them
- Certification rests on measured consumption instead of self-declared checklists, which is harder to game
- Institutional backing is verifiable: UN Tourism recognition, GSTC membership and recognised standards, Travalyst, B Corp
- Very large comparison base, with two million properties listed and 2,500+ certified hotels across 50+ countries
- One tool covers the whole chain, from meter readings to a CSRD statement, without re-keying data
- The preliminary ESG analysis is free and asks for no card details, so evaluation costs nothing
- The application declares fourteen interface locales, well beyond the English and Spanish of the marketing site
Cons
- The privacy documentation is remarkably thin: no retention periods, no subprocessors, no hosting jurisdiction, no effective date
- No DPA is published or advertised as available on request, and no trust or security page exists
- Nothing is said about whether customer data trains AI models, and no opt-out is documented
- Prices are published as ceilings rather than entry points, and the final quote is calculated case by case
- The site contradicts itself on certification cost: "always free of charge" on Solutions, "up to 700 EUR/year" on the certification page
- The four LEARN MORE buttons on the Solutions page all return 404, so detailed product documentation is unreachable
- No mobile app, no public API documentation, and plan subscription runs through email rather than checkout
Pricing & Plans
A free tier is available: the preliminary ESG analysis is delivered at no cost and requires neither prepayment nor card details, though it carries no legal validity on its own. The cheapest paid entry point published on the site is the official Ecostars certification, quoted at up to 700 EUR per year and paid by card online. Beyond that, the three platform plans are quoted as ceilings — up to 1,200 EUR for LITE, up to 3,200 EUR for PRIME and up to 5,400 EUR for MAX — with no billing period stated. All amounts are scaled to the hotel's rating, location and number of rooms, and discounts apply to chains. Readers should note that the Solutions page describes the certification as "always free of charge", which contradicts the paid process described on the certification page.
- sustainability score and improvement opportunities
- no card details
- no legal validity
- recognised certification
- OTA visibility
- full platform access
- valid two years
- designed for hotel groups or independent hotels starting their ESG journey
- advanced tools for next-level ESG performance
- with free water IoT or general IoT at 50%
- full support
- dedicated Customer Success Manager and premium features
- All amounts are ceilings
- scaled by hotel size and portfolio
- with discounts for chains
Data, GDPR & hosting
A consolidated view of how Ecostars handles your data.
GDPR overview
Ecostars is established in Spain, so the GDPR applies directly and no Article 27 representative is required. The site's only compliance claim is a single sentence on the homepage and the Solutions page, "We're GDR-compliant and prioritize data security", which carries an obvious typo for GDPR. The legal notice is grounded in Spanish law and Law 34/2002 (LSSI-CE), and the site runs a Complianz consent banner with TCF purposes. Beyond that, implementation is thin: the privacy policy never names the GDPR, states no legal bases, lists no data subject rights beyond restricting collection and unsubscribing, designates no DPO, names no supervisory authority, publishes no DPA, discloses no subprocessors and sets no retention periods. It also carries no effective date or version number.
Who owns the data?
Ecostars states that data uploaded by registered hotels is confidential and that figures such as occupancy or total consumption are never made public. Only the certification itself, and orders of magnitude derived from calculated ratios, become public information; the raw data never does. A hotel may renounce its certification at any time, in which case the associated data is deleted and the profile is restored as if the hotel had never applied. For personal data, the publisher commits not to sell, assign or distribute it without consent, except under a court order. The legal notice separately reserves all intellectual property rights over the website itself to Ecostars.
Reuse rights
The privacy policy addresses the vendor's use of data rather than the customer's reuse rights, and it grants no explicit licence back to the user. Personal data collected includes names, contact details such as an email address, and demographic information, plus whatever is needed to process an order or issue an invoice. Ecostars says it uses this to run registration forms and orders and to improve its products and services, and may send promotional emails that the recipient can unsubscribe from at any time. Hotel figures feed the ratios and peer benchmarks the platform is built on. Users may restrict collection or use of their personal data at any time. Nothing in the documents states whether customer data trains AI models, and no opt-out mechanism is described.
Data retention & training
Hosting summary
No hosting information is published. The site names no country, no region, no cloud provider and no data centre, and targeted searches across every archived page for AWS, Azure, Google Cloud, "hosted" and "data centre" returned nothing. No security certification is claimed either: neither SOC 2 nor ISO 27001 appears anywhere. The only observable signals are technical rather than declarative — the marketing site is served behind Cloudflare on an anycast address, and the application at sms.ecostars.org runs as a JavaScript front end. The publisher is established in Madrid and the legal notice places the relationship under Spanish law and Spanish jurisdiction, which sets the governing law but says nothing about where data physically sits. Since Ecostars ingests meter readings, invoices and property management data across a portfolio, buyers with a hosting requirement should ask the vendor directly and get the answer in the contract rather than inferring an EU location from the company's address.
Things to keep in mind
Risks and trade-offs to weigh before adopting Ecostars.
- The published prices are ceilings, not entry points: the real quote depends on your hotel's rating, location and room count, so budget from a proper quotation rather than the website figures
- The site contradicts itself on certification cost — free on Solutions, up to 700 EUR per year on the certification page — so confirm in writing what you are actually buying
- The free preliminary analysis has no legal validity, and using its score externally as though it were a certification would be a misrepresentation
- No retention period, subprocessor list or hosting jurisdiction is published, so you would be entrusting operational and consumption data to a pipeline you cannot fully map
- No DPA is published or offered on request: if you process personal data through the platform, request one before onboarding
- Nothing states whether customer data trains AI models and no opt-out exists, which matters if your consumption and occupancy patterns are commercially sensitive
- Automating 80% of the ESG workload can quietly erode the in-house understanding of where the numbers come from; keep someone on the team able to challenge a figure the platform produces
Setup & Integrations
Technical difficulty
Getting started is easy: the free preliminary analysis runs in a browser, returns results in minutes and asks for no card. There is nothing to install. The real effort sits in connecting data sources — utility meters, IoT sensors, invoice capture and the property management system — and that work depends on your building rather than on the software. The IoT layer is presented as removing manual entry entirely once installed. Higher plans add priority support, a Customer Success Manager and monthly ESG consultancy. With no public API documentation, expect a vendor-led integration rather than a self-service one.
Deployment
Integrations
Supported languages
Behind Ecostars
Fundraising
Social
Resources
All the official URLs gathered for verification and reference.
Frequently asked questions
Who is Ecostars built for?
Does certification require an on-site audit?
Can I try Ecostars without paying?
How much does it cost?
Does Ecostars cover CSRD reporting?
Which emissions does it calculate?
Where does the data come from?
Is there a mobile app or a public API?
Who publishes Ecostars and how do I reach them?
What does the privacy policy say about my hotel's data?
Should you pick Ecostars?
Ecostars is a serious vertical answer to a problem hotels can no longer postpone. It measures sustainability from real consumption rather than declarations, it certifies on that basis, and it carries the resulting figures all the way through to a CSRD statement — with institutional backing that can actually be checked: UN Tourism recognition, GSTC membership and recognised standards, Travalyst, B Corp certification and partial ownership by a Spanish public entity. For a chain consolidating dozens of properties, or an independent hotel with no ESG history at all, the combination of a two-million-property benchmark base and a free, no-card preliminary analysis makes the first step unusually cheap. Two reservations deserve weight before signing. The first is documentation: for a platform ingesting meter readings, invoices and PMS feeds across a portfolio, the privacy policy is startlingly thin — no retention periods, no subprocessor list, no hosting jurisdiction, no DPA, and a GDPR claim that amounts to three words containing a typo. Procurement and legal teams will have to ask for all of it directly. The second is commercial clarity: prices are published as ceilings rather than entry points, plans are ordered by email rather than bought, and the site contradicts itself on whether certification is free or costs up to 700 EUR a year. Add four dead product links on the Solutions page and a team of nine behind a very wide feature surface, and the picture is of a young company whose product is further along than its paperwork. Ask for the contract terms in writing, get the quote for your own property, and the free analysis will tell you the rest.
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