Suphi is a great host, very comfortable in communication and really supporting. He answers all your questions and explains details if required.
The apartment is very cozy with a lovely little balcony. Hot shower, clean towels, everything is very nice and tidy. Air conditioning allows you to achieve the optimal temperature in the room. The location is really great, next to Taksim square. This square has access to all transports - metro, funicular, tram. You can get anywhere if you need that.
Also there are many small shops and eating points along your street with loyal non-tourist prices. It's different for the better from prices on the neighboring streets next to tourist hotels.
I definitely recommend staying here.