Marmara Guesthouse is charming and quite pleasant! It's situated in a quieter area of Sultanahmet so there's less traffic and pedestrians. It's within a 5 minute walk to most major attractions. There are lots of cafes and small shops around the corner, so if you don't get to go to the Grand Bazaar for souvenirs, no problem! The staff is extremely friendly and accommodating. I had an early arrival, and they let me keep my bags in the office and also eat breakfast even though I hadn't checked in yet. And the breakfast! They have a splendid spread cooked fresh every day! They even cooked eggs for some other guests who requested some. The terrace is lovely and offers a scenic view. The room was as advertised. Bed was very comfortable, the room was a decent size, bathroom and towels were spotless. You definitely get more than what you pay for! The Guesthouse is an absolute gem. I will be staying there again when I go back to Istanbul!