The place is nice, big and cozy. Contact with Mehmet was really good, he is always available to help and answer the questions. Location is great, the heart of Besiktas!
The thing which is worth noticing is that the area is pretty noisy, there are some hostels so the party is going on 24/7 ;) if you enjoy silence then this area might not be the best for you.
I totally reccomend this place and contact with Mehmet!