Staff, breakfast, room accommodations were all excellent. Coupled with its central -- but very quiet -- location, Marmara Guesthouse is a perfect choice. We greatly enjoyed our 7-day stay immensely. While not a luxury hotel, it is a practical choice. Everyday you'll walk past Topkapi Palace and Ayasofia. While the mattress in our room was a little sub-par, when I asked for a better one they provided it. The staff are wonderful hosts. Morning breakfasts are excellent.