Marius and Anitas place was fantastic. The location was extremely convenient; most places in the city were walking distance, with a number of excellent restaurants, cafe's and bars situated very close by.
When we arrived, the cleaners hadn't cleaned up after the previous guests. Marius was extremely responsive, and a cleaner was there to clean things up within half an hour of getting in contact with Marius. Couldn't be happier with the way this was dealt with, and unprompted, Marius and Anita generously offered to refund us our cleaning fees.
In terms of the space itself, the kitchen was modern, the bed was comfortable and it was a fantastic place to base a holiday out of. One thing to be aware of is that, as reported in other reviews, footsteps in the apartment directly above this one can be loud, and shake the window in the bedroom. If you're a light sleeper this might bother you, but it didn't affect me much.
Overall we had a fantastic stay, and would stay there again.