The general look of the house is satisfactory and its location is very good. But our stay was not a good one due to a few facts and they really need to improve a few things drastically, in case they'd like to offer their guests a minimum good level of service.
1. Their communication before the check in was not positive. We could not agree on the total price calculation and they were not very helpful on explaining things. Especially the owner's communication during that phase of discussions was outright rude.
2. They didn't have blinds (nor traditional cloth curtains) on the windows of the bedrooms. So there was nothing to block the sunlights in the middle of Istanbul summer! The sun was literally setting right into our eyes at 5 am!! When we requested very simple blinds, they refused to help (they just offered eye coverings which is definitely not helpful since we told them we have very small kids and they cannot possibly use eye covers) and we had to bring our own blinds and put them to the windows in order to be able to sleep properly!
3. The AC unit of the living room was missing. So the living room was so hot that it was basically unusable between 13:00-20:00
4. Upstairs AC was leaking heavily. All the floor wooden tiles were swollen heavily due to the leakage. So basically upstairs was also unusable, apart from the bathroom.
In summary, they definitely need to be more polite and effective in their communication, and also be more accomodating to their guests' basic needs.