Everything that the other 5 reviews say is true - It's a sparkling clean place, well organized, Engin's a lovely host, and the place is within walking distance from Istiklal street and Taksim Square.
Just so that you are not a little surprised like I was:
- The apartment is small.
- The walls aren't red, but purple.
- And it's three streets deep from the main road.
All that said - I'll still give this place a 5 star.