We had a really great time in Amsterdam staying at Ned's place. We hired bikes (Danny's bikes offered a discount because of Ned's reference) and could get around Amsterdam really easily - from the apartment it is less than 10 minutes into the centre, and everywhere is really easy to find. We definitely think biking is the way to go and would recommend as a first choice for anyone visiting!
The attic room was indeed cosy but it had everything we needed and we were very comfortably for out 2-night stay. Ned's really friendly and welcoming - great host, great room, great city.