I highly recommend this place. It's quaint, on a quieter street near all the Taksim action, and the hosts are literally the kindest.
I came for some medical surgeries, and Derya sent over homemade soup and fresh fruit. She also texted regularly to see if I have any requests or needs. 5 star service for sure.
I originally chose their place because the couch looked firm but comfy and the shower head was removable which would help with nose surgery recovery (couldn't get the cast and tape wet) and I have to say - both of these were great. But now, I would book again soley because of the care and attention I felt from Derya and her brother.
I stayed for 3 weeks - definitely great for longer or shorter stay rentals. The wifi worked well, the space is comfortable and the location is brilliant. The cherry on top are the hosts.
Book it.