The Santa Ottoman hotel is only a couple of minutes walk from Taksim Square which is ideal for tourists. However, be warned, Zambak Street is very busy up to about 4am not only with party goers but with taxis and bus taxis that are continuously plying for trade. I had earphones with me that usually work well, but, didn't stand a chance here. There is a small kitchen area in each room with a sink, tea/coffee facilities and a small fridge/minibar. Water bottles cost 2 Lire and other drinks, chocolates are priced fairly although directly opposite the hotel there is a small corner shop where the same products are cheaper.
The rooms are nice but beware of A LOT of mould in the bathrooms, particularly in the shower area. Also, when the air-conditioning is turned on, there is a musty, mouldy smell which wasn't appealing!
The rooms were cleaned to a high standard every day but breakfast is a disaster. It does not look like the photos but consists of very tired looking cheese and jam with sweetened fruit drinks and weak coffee. We only ate there once choosing to breakfast out for the rest of our stay. (If you enjoy eating mussels, every evening there are stalls around the area where the vendors will cut the fresh mussels open, squeeze lemon juice all over them and hand them to you for a very good price- 3 for 1Lira.)
Overall, this hotel is OK but with the vast choice of hotel accommodation available in the area I would not stay here again.