I stayed here for one week. (was booked for 10 days). This was my experience. I shall try and be as honest as possible.
Pros - very nice hosts, friendly and helpful. nice fruit plate on arrival, water and assortment of drinks in the fridge. The kitchen is well stocked with most items needed. bathrobes available. tv has free Netflix. Underground parking is available as well as lots of security. Carrefour is right next door.
Cons - smaller than expected. The A/C was broken (yes it was January but the apartment was quite warm). Güneri had it fixed within the next few days (that is a plus). I found it noisy - I could hear the street, cars and sirens with windows closed (worse when windows open). The bathroom had bad smell at times.