I stayed at Astrid's studio for two months and had an absolutely great time in Cihangir. The studio is perfect for one person or a couple, it is quite small but has everything you need- a kitchen equipped with the basics, strong wifi connection, a pull out bed, a washing machine, iron, vacuum. The garden/terrace outside is a huge plus for some fresh air, a green space to have breakfast everyday, and place to dry your laundry. There is a bit of a funky smell in the washroom but for the value of the apartment this is something you can easily deal with, I just put some air freshener's and always left the doors open to ventilate the space. The neighborhood is super safe and full of amazing cafes and restaurants. There are several grocery stores, a gym, and a laundromat within walking distance. Taksim/Istiklal is 10 minutes by foot. The location is really superb. As a host, Astrid was very responsive to any request. She brought me towels and a french press and was always willing to help with any issues. I'd highly recommend her studio for a short or long stay in Istanbul!