The communication with Engin was excellent. He was available via whatsapp and supplied us with extra things when we ran out. Also provided us with a taxi service (reasonably priced). We were there with our 7 month old and he made sure there was a crib and high chair. The only thing you should take into account is that the location is great but only reachable via steep and narrow streets. Don't go there with a stroller or people who aren't very mobile. Because of all the household appliances we could also enjoy our stay in Istanbul fully.