Istanbul is AMAZING! We only spent 2 days here which was just no where near enough time. The hotel is perfectly located right next to the Blue Mosque, Hagia Sophia and the old palace / gardens so there is plenty to do! The men who worked in the lobby were extremely helpful - carrying our huge suitcases up three flights of stairs and spending time explaining the history of the area as well as circling all the good places to visit on a map.
We were unlucky in that there was a screaming child in the room next to us who didn't stop crying for two days but this can obviously not be helped by the staff.
Rooms are quite small but have everything you need - balcony and aircon a +++
They serve yummy breakfast up on the rooftop balcony every day which is also an added bonus!
Would definitely recommend to travellers looking to explore old Istanbul.