Extremely satisfied!
It is nearby IELTS British council center, literally 2 minutes to get on foot.
Underground station is 5 minutes walk, and also ferries to get to European part of Istanbul.
Maybe, about disadvantages - freezing cold floor, need to have slippers.
You can get to the nearest carrefour in 5-10 minutes. But you can buy some sweets in tekel shop nearby, 1 min walk.