I stayed at Sonder for two weeks in the process of relocating to Amsterdam. The Sonder staff were just simply the best. Super friendly and really helpful with giving really useful tips on public transport, shopping and just finding my feet in a new city. The hotel is a beautiful traditional building with a fantastic location: walking distance to lots of shops, cafes and restaurants. The only down side I would say is that the walls and windows are pretty thin, so you hear everything. But they very kindly provided ear plugs which helped. I would recommend this hotel to anyone! Would give 10 stars if I could.