We (with family) stayed for roughly 9 days in Istanbul at this accommodation.
The stay was pleasant in general. We arrived past midnight, contacted Elif beforehand and there was someone present at the accommodation to welcome us in, given the arrival time, it was nicely arranged.
Over our stay, everything was fine in essence.
Toilet wasn't the cleanest but it wasn't that bad. However, the toilet and bathtub frequently clogged up. The bathtub filled with water as you were showering wasn't particularly nice.
Other than that, I don't have any other complaints. For the price good accommodation and the location was great.
In general, this accommodation was really good and I would recommend it.