This place is amazing for couple stay. Location is right in the centre of old town (though be aware that this place is very mountainous and sometimes it takes longer to get the taxi in this area).
The apartment itself is perfectly clean and newly furnished. It has all the facilities needed from Netflix to tea and coffee.
The host is very nice to talk to, never had any problems with her. She also helped us out with the list of bars and restaurants we can visit nearby.
Definitely recommend this place and might stay here once again when I’m back to Istanbul ;)