Green Awards
Castelli is thrilled to be GSTC Certified by Royal Cert!
GSTC (Global Sustainable Tourism Council) Certification is the world's leading standard for sustainability in tourism.
Castelli is the ONLY Summer Hotel in Greece to hold this milestone recognition, and this comes as a lifetime recognition to our family and team members, and a promise to you, our precious guests.
Thank you!
What does it mean for a hotel to be GSTC Certified?
It means the hotel has been independently audited and verified against rigorous sustainability criteria covering:
- Sustainable management systems
- Environmental performance
- Social and economic benefits for local communities
- Protection of cultural and natural heritage.
Learn more at https://www.gstc.org/certification/
What does this mean for our precious guests?
When you holiday ☀️ at Castelli, you choose responsibly - and it feels good. 😊
Castelli is your pampering home-from-home, where you can relax proudly, knowing that conscious choices are woven into every part of your holiday experience.
From reducing our environmental footprint 🌿 and striving to make a positive impact, to supporting the local community 🤝, we offer you more than a stay.
We offer a true sense of place 🏡, adding authentic character and meaning to your ❤️ time with us. And it feels good ❤️
Silver Award at the Europe Responsible Tourism Awards 2025 from ICRT Global.
Ambassador of Responsible Tourism in Europe,sponsored by EasyJet Holidays
Castelli Hotel in Zakynthos has been honored with the Silver Award in the category "Responsible All-Inclusive Hotels of Europe" at the Europe Responsible Tourism Awards 2025, organized by the International Centre for Responsible Tourism (ICRT Global) and presented on 16 October 2025 in Brussels, with EasyJet Holidays as sponsor.
This distinction recognizes all-inclusive hotels that actively practice Responsible Tourism, minimizing negative impacts while enhancing positive benefits for local communities and the natural environment.
What the judges said:
Castelli Hotel is a family-run, adults-only retreat in Zakynthos, built around the island's oldest eucalyptus tree - the owners reduced the originally planned number of rooms to preserve and protect it.
The hotel emphasizes local sourcing and the use of regional products, offering homegrown olive oil, wine from local producers, and other local specialties.
Guests have the opportunity to connect with the local culture through activities such as olive harvesting and cooking classes.
The judges stated: "Castelli Hotel is an exemplary example of a resort that harmoniously integrates with nature and communicates Responsible Tourism clearly and sensitively to its guests."
At Castelli, we believe that Responsible Tourism enriches every journey - creating deeper connections with local communities and authentic experiences. Through Greek language and weaving lessons, and hands-on cooking classes, we invite our guests to discover local traditions and culture as part of their holiday.
Our guests' Food Experience is very important to the Castelli Team: hence, our all-inclusive wine is produced exclusively in Zakynthos, supporting local vineyards and offering our guests the unique opportunity to Eat and Drink Like a Local.
With reduced plastic use, everyday responsible choices and a spirit of care for people and nature, we create a truly meaningful way to travel, and a home from home to our precious guests.
We promise to become better, for YOU. Thank you
