Nice , clean apart with very central location. Kitchen was small but good enough for tea, breakfast. Cleaning was done once in three days. Bed was good, sufficient towels provided. The Omar Hayyam bus stop is 4 min walk and frequent buses take you to Eminonu, Besiktas area where most of the attaractions are Galata tower and Istiklal street are 10 - 15 leisurely walk.
Our hostess Nida was a very good human being. She helped us with extending our stay at discounted price when our toddler fell I'll and we had to stay back in Istanbul. we are very grateful to her.
pro tip: The apartment has a lot of stairs,2 flights going down and then several flight going up, depending on which floor you get. If one has knee problem/ baby- one option could be to request to get a lower floor