If you want to go to the Asian side of Istanbul this is the perfekt location, because it is close to "the action" and very close to the ferries to go to the Old Town and European side.
The flaws are, that the room has no windows, there is no commom area and they don't provide towels or toilet paper (there is a bidet though).
But if you want to have a privat room to rest a few days, this is perfekt!
The manager is really nice!