It's a room in a hotel Invictum Residence. Location is perfect: Taksim square and Itiklal street are in about 5 minutes by feet. Bus stop to and from airport is near as well. There are plenty of cafes and shops nearby. There is one minus of the location - it's a bit noisy at the hotel because of mosque and crowded street nearby.
Description of the room isn't quite right. There is no washing machine and I don't remember iron in the room as well. Also there is no breakfasts at the hotel.
Kitchen is poorly equipped. There is a stove, but no pans or anything to use with it. Fridge worked not very good.
Previous guests probably boiled pasta in a kettle. Some of it left there and staff didn't noticed it. It was pretty nasty to find when we wanted to make some tea... But guy at the reception helped us and quickly changed the kettle.
Generally room was alright. It's quite nice place to stay for several days.