The Marmara Guesthouse is an excellent and affordable place to stay. We stayed for a week. Yamur and Elif helped us with everything, including our trip to Cappadocia and other tours we took. The breakfast is delicious and the terrace views are exceptional. The best part, however, is the proximity to the Hagia Sofia, the Blue Mosque, and the tram line. You'll have a great stay at the Marmara. Guaranteed.