The best thing was lightning fast response, in perfect English, with immediate resolution of any problem!
The location was great, as my local friend confirmed. The building is relatively new, and has anything you would need within minutes of walking. More than 1 bathroom would be good, but this is probably just how apartments are in Türkiye.
I would give 4.5 stars if Airbnb allowed half-stars, but since it doesn't I just round it up. The reason for half the point are some small things which could have been taken care of before letting the new guest in. The hair dryer was not working. TV box has signal issues and requires unplugging/replugging every now and then to stop blacking out. Pasta strainer is basically torn apart. Only a couple of dishwasher tablets and trash bags were provided - while VNG Property mentioned that before hand, I think they should just keep a larger stock, it doesn't make sense for the guest to be buying boxes of these things to only use a fraction.