We stayed in Celine's place for 2 nights and this experience was really nice. The house is situated in a very quiet area but just 20 minutes from the downtown by foot. The flat itself was cosy and spacious, the bed was comfortable and we also liked a lot of tiny things that make a unique and pleasant spirit of the place.
Steps to the flat were a bit steep for our dog that travelled with us, but this is the dutch steps are like - just mind it.
I would highly recommend Celine as a host and here flat as a place to stay in Amsterdam.