The place was excellent. Everything worked well: air conditioning units in the bedrooms, toilets, washer/dryer, showers. The place was nice, very clean, and had ample room for my two friends and I. We didn't use the kitchen but it was large and well-appointed. The owners were very responsive and helpful with whatever we requested, including about ordering food and transfers to the airport in the wee hours. The neighbourhood (Ortakoy) was very cool and centrally located to explore this immense city. There is only one thing to beware of: the street that the place is on is insanely steep! The wifi was also spotty (as it was across Turkey), especially in the bedrooms. Overall, I would highly recommend this spot for your stay in Istanbul. Enjoy.