I stayed in Nabu hotel for 4 nights in March. Overall it was a satisfying experience. The rooms were adequate, good size (I had a double room to myself). I did smell a little damp, and the walls did seem thin as I could hear the doors and next door. Fact that it was in a busy lively area, it was slightly noisy and difficult sleeping but that was as expected - no fault of hotel. House keeping was good, woman was welcoming. In terms of services, there wasn't much the hotel offered, no excursions or specific recommendations/partnerships which was a little disappointment especially being new to istanbul so it's something that I would advise the hotel to incorporate. However the owner was always helpful and tried to help where he can. It was a family run business, but apart from the main male owner who was helpful, the wife and daughter weren't very talkative - very quiet and stayed to themselves. The bar and restaurant was never hardly used. Breakfast was not to my taste, was very limited. The tea and coffees were nice. Just also want to advise that the cab the hotel booked for me to to istanbul airport, the cab driver added an extra 200 lira on (from meter reading, he blamed on toll charges) and then used his own conversion to euros. What should have been less than 30 euro trip tp airport ended up 40 euro. Hotel should be wary of this.
Overall the hotel was adequate for my stay with positives bit also alot of potential for improvement to make the customer experience better.