Communication with the owners was good, but unfortunately this is the only good thing that was associated with this apartment. I hate to write all this, but people should know where they are going. The apartment is on -1 floor under the supermarket, and every morning from 7 o'clock in the apartment there was a terrible rumble which made it impossible to sleep. The smell in the apartment was horrible - a mix of cat urine and something else. The heating and boiler were not turned on and we had to figure out how to turn on the heat and then wait a long time until it warmed up. This was our first trip to Istanbul and I was not sure about the prices of accommodation, and the option for 45 euros a night in a windowless apartment on the -1 floor did not seem like a bad deal. But if I had known what the conditions would be, I would have overpaid and rented something better. I'm sorry to write this, but it's an honest review.