Thanks Bilgehan. This was a real treat. The flat is brilliantly located. There are the lively areas of Beyoglu, Pera and Tunel within a 5-10 min walk and it is only 15 min to the Galata bridge. It's also less than 5 min to the tram stop at Tophane. And the flat is great. It's essentially a big studio with lots of light, a big balcony and fantastic views across to Topkapi / Hagia Sophia as well as to the Galata Tower. We even (sort of) got used to the stairs. In all, highly recommended.