Great host, no problem arranging the checkin, even got offered to be picked up at the airport.
The apartment is very nice. The neighbourhood is close to Taksim and Istiklal street, but it is itself in a relatively quiet street (no noise at night, but also no people).
Otherwise everything was arranged in the appartment, we had water and fruit provided by Garen. Also Garen sent us recommendations of things to see.
Overall a great experience.