Good cozy basement place. The positives: Nice useful kitchen, good WiFi, good quiet AC unit, huge HD tv, location is very close to tram and ferry lines, and although the walk up to Taksim is a bit of an uphill hike, you can take the funicular F1 which is only 5 minutes away and takes you up to Taksim Metro in 2 minutes. Also I was allowed to check in a couple hours early, communication with the host was fast and clear.
Downsides of this place are: the curtains are semi opaque so it does not get dark at night; I found the bed only semi comfortable but I have back problems; it is generally quiet at night but sometimes people use the washer and dryer (one floor below) after midnight which can bother you if you are a light sleeper.
On the whole, a good place.