The apartment was spacious and decent. It is a very noisy location, so you might need earplugs to sleep at night. The area is quite good. It has a lot of local restaurants, coffeeshops and grocery stores. Most people don’t speak English though, so you need to keep your translation app handy. Locals at this neighbourhood are very kind and much nicer than people in the touristy parts of Istanbul. It is about 1 hour trip by public transport to Sultan Ahmet/Istiqlal.
Ayhan was very kind, hospitable and usually responds quickly.