
60 hotels in South Holland hold Green Key certification. Each one is audited by an outside body, on a schedule it does not set itself.
Wikimedia CommonsWestcord Hotel DelftModern hotel in Delft with a practical layout for city and business stays. It offers a straightforward base close to the city while remaining calm andIndependently certified
Wikimedia CommonsRotterdam Marriott HotelRotterdam Marriott Hotel is a hotel in Centrum, Südholland, Niederlande. The name suggests the Marriott brand, and the listing includes links for onliEV charging on siteIndependently certified
Wikimedia CommonsBilderberg Parkhotel RotterdamClassic Rotterdam park-side hotel in a central, walkable location. Good for car-free city weekends.Independently certified
Wikimedia CommonsBilderberg Europa Hotel ScheveningenBilderberg Europa Hotel Scheveningen is a full-service hotel near the beach in Scheveningen, close to The Hague. As part of the Bilderberg group, it tIndependently certifiedGreen Key audits a hotel against roughly 100 criteria, some mandatory and some scored, covering water and energy use, waste separation, cleaning chemicals, food sourcing and staff training. A hotel applies, documents each criterion, and is then visited on site. Certification runs for one year, so a hotel keeps it only by re-submitting evidence and passing another visit. It is the largest scheme in this catalogue and the one you will meet most often across Europe.
Green Key measures management practice, not carbon. A large hotel with a pool and air conditioning can hold the certificate while using far more energy per guest than an uncertified guesthouse down the road — it is being judged on whether it manages its resources deliberately, not on the size of its footprint. The scoring is also weighted towards documentation, so a hotel with good records can outscore one that quietly does better.