Marmara guesthouse is located in the tourist area of Istanbul, not far from Hagia Sophia and the Blue Mosque. We found it convenient and comfortable, and the view of the Bosphorus from the breakfast room on the roof would be hard to top. I loved sitting there and watching the ships go by. Elif was always helpful and recommended a nearby restaurant that we went to on two of our three nights there. I felt completely safe there (and in Istanbul as a whole). I highly recommend.