My parents stayed here for a week and really enjoyed it! The apartment is very cozy, warm, beautiful, nicely decorated in traditional style, and has everything you need and even more.
The hosts, Arzu and Ozancan, are absolutely amazing - they provided us with TONS of really helpful information and guidance on what to do in the city, how to commute, etc. They always replied very fast, were super polite and nice. The check-in was very easy, and all appliances had video instructions on how to use them.
We will try to book this apartment again if we return to Istanbul in the future, and will recommend it to our friends as well!