Great stay all around in a very convenient location easy to commute anywhere in central Istanbul. Ruhi is a genuinely kind and caring host with excellent communication pre arrival, and suggested visiting the nearby Rahmi Koç Museum which was brilliant.
The apartment itself is on the 3rd floor without a lift so be aware of stairs if that is an issue, and the kitchen and bathroom are very tiny small spaces which may not be suitable for everyone. Neither of these things bothered me at all and Ruhi's friendliness and hospitality was far more than expected. An added bonus just at the end of the street behind the mosque is an authentic Turkish bath and sauna which was a great experience at a non tourist price.... €10 for 1 hour sauna, scrub, and 10 minute masage.