We had a three night stay at Ansen's. Our suite was on the first floor. The sound isolation isn't great. We were unlucky that road construction was carried out during our stay for an entire evening and night and the sound was disturbing. I am not sure if the hosts knew construction was planned, but we would have appreciated if they had let us know about this before (in case they were aware).
We asked for extra towels and were denied because apparently linens and towels are changed every two days. Our duvet covers had holes in it (I do have photos). There were only two wine glasses and two whiskey glasses in the kitchen. Overall, an ok place to stay for a few nights, but we have stayed at better places in Istanbul in the same price range.