At first I was on the fence to rent this place since I had big luggages and with the apartment being located on the 2nd floor and no elevator, it would've been very hard to take the bags upstairs by myself. So I asked Metin if someone could help and he had somebody carry my luggage to the 2nd floor. I had to carry them downstairs by myself when I left tho which wasn't fun!
It is very close to Taksim square like 5 min walk and I could also walk to karaköy by the water in about 20 minutes. The only thing is that it's uphill when you go back so be prepared for that.
It can get very noisy at night. I woke up several times by the sound of cars honking on the street which is understandable since it's located near a busy street.
There is only one split unit in the living room that provides heating and cooling for the whole apartment and therefore some rooms like bedroom and kitchen don't get as much heat and remain chilly at night specially during cold seasons.
Communication with Metin went smoothly, he provided required supplies for bathroom within a day.
Pretty much anything you'd need is within a walking distance and I enjoyed my stay very much overall.