We stayed in Ayhan's apartment for 10 days and it was a really good experience. Ayhan is a friendly and hospitable person who responded to all questions and requests quickly.
The apartment is perfectly located, very near the main street with a lot of cafes and shops. There a few small food stores around the corner and a bigger one about a 5 minutes' walk. Public transport is also easily accessible but we preferred to explore the historical center on foot)
It tends to get pretty noisy at night due to the proximity of restaurants and bars, but it depends on the person's lifestyle and cannot be considered as the fault of the location.
The apartment itself is nicely decorated and quite comfortable. However, it's sometimes a bit damp which attracts mosquitoes if you open the window, so it would be great to have a mosquito net. Also it's not very convenient to dry clothes after washing as there was no drying frame.
Overall, we can really recommend Ayhan's apartment :)