Great host with very quick replies to questions. Great apartment, clean and spacious. One big bathroom but also an extra room with shower and an extra toilet makes it easy to share for three persons. One of the double beds consists of two beds, which makes it possible to move in to the living room and get four sleeping rooms.
I would argue that 20 minutes walk to the UN is a bit too much to brand it as "walking distance". At least on cold windy Geneva nights. But great and calm location anyway, with stores and some restaurants nearby.