The apartment is amazing! It's not big, but very light and spacious. It's also super clean!
The view is just breathtaking - why would you even want to go out if you have such a view?:)
Unfortunately I didn't meet Meltem and her partner personally due to severe lockdown, but they were super friendly and very responsive and helped me with ordering some stuff for the house.
In general, I am more than satisfied with two weeks I stayed there (btw the apartment is fully equipped for a long stay), and would be glad to come back next time I am in Istanbul!