The only (small) downsides are that due to the location at the back of the building, you don't get much sunlight, and if you are tall there might be some minor inconveniences (low ceiling in the sleeping area, low hanging bathroom mirror, and low hanging shower).
Agnes & András were fantastic hosts, lending me a bike, arranging a new washing machine when the old one broke, and they were always available whenever I had questions. Thanks a lot for making my stay even better!
I would definitely book this apartment again whenever I would decide to come back to Budapest in the future.