We (4 adults) stayed at Tuba's lovely apartment for 4 nights and it was perfect for our needs. Quiet, spacious, well located and very comfy with everything we needed and thoughtful touches from her and Paul, who was extremely helpful with entry instructions, questions etc. Once we figured out the under-floor heating the place warmed up nicely - it was quite chilly without it! The only thing to be aware of is the stairs up to the kitchen & living room, which have no hand rail on either side and would be impossible for anyone with balance or mobility issues. You also need to watch your step when admiring the truly spectacular view, as it would be quite easy to step over onto the open staircase! Apart from that we'd definitely stay again when we come back to Istanbul, if we're lucky enough to find the apartment available.