The Sign Kocaeli Thermal Spa Hotel & Convention Center  

In Basiskele on the Sea of Marmara, a thermal spa hotel and convention center sits about 1.4 miles (2.3 km) from the water. It's roughly 85 km from Sabiha Gökçen Airport and within easy reach of Kartepe, Sapanca and Bursa.

The property offers 164 guestrooms with minibars, LCD TVs, private bathrooms, safes and turndown service. Expect a spa-focused vibe with family-friendly touches like children's playrooms and an arcade.

Relax in hot springs, three indoor pools, an outdoor pool and a steam room, or book massages, facials and body treatments at the spa. On-site perks include a barbecue area, concierge, free self-parking, complimentary Wi-Fi, laundry/dry cleaning, elevator access and a tour/transfer desk.

A conference center, four meeting rooms and a business center make this a solid choice for events and meetings. Complimentary Wi-Fi and on-site event services support corporate needs.

Two on-site restaurants and a bar/lounge cover meals and evening drinks, with a casual barbecue area for outdoor gatherings.