Staying in Berks apartment was amazing. It is a really big apartment with four separate bedrooms and a nice living room. The apartment is at an A-location in Istanbul near almost every thing you want to see and do.
The only thing what was annoying were the loud noises from the restaurant/bar at the back. In the weekends(friday & saturday) they are playing loud music till 5 am in the morning. Be prepared for that.
Overall it was an amazing stay. Berk is a nice superhost and he prepared everything for us to have an amazing stay in Istanbul.