It's AMAZING!
The place is literally around the corner of THE mosque and aya Sophia, and the topkapi palace and the basilica cistern, and everything!
It also has a fantastic sea view breakfast balcony, as promised
The people there are so accommodating. I arrived late (2am) and left early (3am), they arranged everything. I wanted to see the dancing performance, the helped me to book the ticket right away :)