Hotel Milenij is a sustainable hotel located in the heart of Opatija. It offers luxurious accommodations with a focus on environmental sustainability. The hotel has implemented various eco-friendly practices, such as energy-efficient lighting, water conservation measures, and waste management systems. Guests can enjoy stunning views of the Adriatic Sea from their rooms, as well as access to a spa, fitness center, and outdoor pool. The hotel also offers organic and locally sourced food options in its restaurant, promoting sustainable agriculture and supporting local farmers. With its commitment to sustainability, Hotel Milenij provides a comfortable and eco-conscious stay for visitors to Opatija.