The apartment was great and the host was very kind and waited for us till 1 AM for a very late check in. We arrived late because we delayed border procedures and a long trip with the car.
We were fortunate to find a free parking spot on the street right in front of the building and we left it there for 7 nights with no charge.
The location is superb with 5 minutes walking distance to the metro, less than 10 minutes to the tram, with a lot of markets and restaurants just a few minutes walking. The Fatih mosque is also less than 10 minutes walking away. So basically you get yourself an Istambulkard and leave the car on the parking spot.
We were 5 in the apartment and there was enough room for all. It was clean. The building was new with video cameras, lift and code keypads at the main door.
I would recommend it to anyone and I hope that some day I can come back.
Again, I have to thank Olcay for his tremendous hospitality!