Great Location, Great place. I enjoyed my stay at Berna's place. She was a great host, gave me fool proof instructions on how to access the apartment and also we were able to keep our luggage after we checked-out for our late flight. The house was quiet calm and peaceful, walkable distance to Taksim square and Public transport. The only things you will need to be concerned about is there is no lift in the apartment and its spiral stairs, so if you have heavy luggage it may be a bit difficult.
Overall recommended.