We have mixed experience with this apartment. We booked it for Dec20th-Jan7th to celebrate New Year and my birthday during a 19-days vacation in Istanbul. And we had to move to a hotel before our rent ended.
The apartment itself is amazing and there is nothing to complain about it. Except for maybe the stairs, without an elevator, it is quite an adventure to go up and down every day. For my husband it was okay, but for me a bit difficult. But the real problem was the level of noise from local places. It was so high at night that we couldn't sleep. Starting Dec 21st every night until 2:00 a.m. (some days even later, like 4:00), the music from the local bars was playing so loud that it was impossible to sleep. In the morning at 9:00, the neighbor buildings' reconstruction sound woke us up. So we had from 5 to 7 hours of sleep if we are lucky. And this important detail wasn't mentioned in the apartment description.
Also, there were several water and electricity problems. At first, there was no water at the apartment. The host told us it was ongoing maintenance in Karakoy (but again nothing about it was mentioned before we came). Then there were several power outages for 60-90min. Next was a power outage for 18h (evening to next day dinner). I don't know if the water boiler is powered by electricity, but during that time there was no hot water. The host said that it was due to the central transformer failure.
So we decided to move to a hotel after 10 days without sleep and all the inconveniences.
The hosts (Eren & Burak) replied to our messages quickly and they were very polite so the communication itself was smooth. Unfortunately, they refused to refund us the full payment for the remaining days (Dec30th-Jan7th). Airbnb team refused to help us too, according to their policy, because we didn't report the problem in 24 hours.
Yes, all these things are out of the hosts' control, but it's not our fault either. And we should not cover all emergency situations, expecting a fair deal in that case.