We had a fantastic stay! The host was incredibly communicative and helpful - giving us suggestions for our COVID test and helping us book a taxi when we left. He also had great recommendations for restaurants and neighborhoods to visit.
The location was literally half a block from the Galata tower - you can see it as soon as you walk out the front door. The Beyoglu neighborhood was very busy and a little touristy, but had some great food options and we enjoyed exploring the alleyways. We also were able to walk to most places.
The apartment itself is in a historic building - as you may expect from the neighborhood, it is a bit on the smaller side and not too new, but charming.