Murat's apartment, located a short walk away from the Galata tower in Beyoglu, is exactly as described on Airbnb. It's a very cute space in a fantastic location that provides easy access to all the major tourist attractions of Istanbul. Keep in mind however, that although the area is tourist-friendly, it's also very gentrified. Expect to find cafes and restaurants that are significantly more expensive than in other less-touristy parts of Istanbul (for example on the 'Asian side').
The apartment is fitted with all the conveniences for a comfortable (short- or long-term) stay, including Wi-Fi, heating, a microwave, dishwasher, washing machine, dryer, stove, and kitchenware. The space is more than enough for 2 people, and can, at a stretch, host 3-4 people for a short stay.
Murat himself is super easy to communicate with and provided us with clear, prompt and helpful information whenever we had a question. Some prior guests seem to have had trouble with the bed, which they reported as 'too hard', but we found it very comfortable and didn't have to resort to sleeping on the couch.
TL; DR: We highly recommend Murat's Airbnb to all visitors and tourists in Istanbul. No complaints at all! :) Thank you, Murat, for a lovely Airbnb experience!