The following services and amenities are available, but with reduced service: Breakfast. DoubleTree by Hilton Hotel Istanbul – Tuzla is in an ideal location for your business and vacation needs. The business and trade centers of the Asian side of Istanbul, such as the Gebze Industry Area, Tubitak Free Zone, and the Tuzla shipyard and marina are minutes away. Take a short drive to the historic and entertaining sights of Ballikayalar Caves, Darica Zoo and Eskihisar Castle. This historic hotel in Istanbul features French architecture and is surrounded by 72, 000 sq. meters of green space with 100-year-old trees. Relax in Hipotermia Spa, and listen to classical music underwater in the pool. Choose from a wide selection of spa treatments. The fitness room offers cardiovascular equipment, balance balls and yoga mats. Enjoy the DoubleTree signature, warm chocolate chip cookie you'll receive at welcome. Relax in a comfortable guest room that features garden or sea views, complimentary WiFi, a 42-inch HDTV, laptop-sized safe, minibar, tea/coffee-making facilities and air conditioning. Most have balconies. Upgrade to the Asklepis Suite, which offers a living area with a sofa bed. Magnolia restaurant serves Turkish and fresh food, and the Lobby Bar offers local and international beverages. 24-hour room service is available. Hold your meeting or conference in our space accommodating up to 100 delegates. The venue has natural daylight, technical equipment and air conditioning. Have your wedding in our unique garden and outdoor pool venue.