We loved our stay at Ansen. The place was big and the interior was nice and modern. We liked that there was plenty of closet space and the bed was very comfortable.
The location was amazing. You can't get any better than this when staying in Istabul. There are plenty of restaurants, coffeeshops and bars in the surrounding area. The main street is just a 5 min walk away.
Check in was uncomplicated. The Ansen team are great guys, always friendly and helpful.
You are definitely getting great value for a very reasonable price when staying with Ansen.
Some little downsides: For the first couple of days of our stay the Wifi was very unstable and sometimes didn't work at all but the Ansen team fixed it and it worked fine for the rest of our stay. There was a similar problem with hot water which was fixed after the third day. About half of the lamps and also some of the outlets in the room didn't work. We didn't ask them to fix it, otherwise they'd probably have. The apartment is a bit dark (especially due to some of the lamps not working) so we rearranged the furniture a bit so we could sit closer to the windows which was ok.
One more note for future guests: The laundry services is not included which we weren't aware of. The pricing was very reasonable, though. Still it would have been good to know beforehand.