I recommend Social House in Istanbul. The location is perfect. It's near to the main monuments in Istanbul. However, since it's a very animated area, it is noisy during the night and the morning. The room was very big and fully equiped. We even had a small kitchen. There was however a bad smell in the bathroom most probably because it's an old building and the pipelines are old too. The overall experience was very good and a Big Up for the staff working as hosts especially Mustapha and Ridvan. They were very helpful and available whenever we needed them. To finish, Thank you Social House.