The Carlton Square Hotel in Haarlem is a sustainable hotel that offers a luxurious and eco-friendly experience for guests. The hotel has implemented various sustainable practices to minimize its environmental impact. They have energy-efficient lighting, use eco-friendly cleaning products, and have a comprehensive recycling program. The hotel also supports local businesses by sourcing organic and locally produced ingredients for their restaurant. Guests can enjoy delicious meals while knowing that their food is sustainably sourced. The Carlton Square Hotel is committed to providing a comfortable and eco-friendly stay for guests visiting Haarlem.