Cüneyt's studio apartment is fantastic. I only stayed one night on a layover from Cappadocia to Athens, but wish it'd been available for my other nights in Istanbul earlier in the week. It's located in/near the beautiful, historic Galata neighborhood. There are tons of restaurants, shops and cafes very close to the flat, plus it's only a 3-4 minute walk to a tram line that takes you to the Blue Mosque, Hagia Sophia, Grand Bazaar, etc. in under 15-20 minutes. When I arrived, I also asked Cüneyt if I'd be able to extend checkout by 1 hour (since that's when I'd be leaving for the airport), and he had no issue with me doing so. Massively helpful, and much appreciated. Would def stay here again if visiting Istanbul in the future.