You can find no better place in Prague, seriously!
Magnus' apartment is exceptional with its central location, cosy design and cleanliness. It is very very spacious and has everything you might need for your stay from soap to washing powder, from towels to a hair drier, etc. There are plenty of restaurants around and grossery stores just around the corner.
We literally just felt at home there. Magnus has provided everything for our 1.5 year son (crib, baby chair) which was super handy. Plus there are fantastic playgrounds just a couple of minutes away from the apartment (check-out Detsky Ostrov, for example).
The communication was great and very fast. To cut a long story short, I holeheartedly recommend Magnus' apartment for your stay.