We stayed at Alan and Kasia's place in the last weekend of February 2018, and it was great. The room space was great and warm, which was indeed very needed during this time and comfortable. The apartment had a very nice bathroom and also kitchen commodities. We arrived very late at 23.30/00.00h and didn´t have a problem with the check-in, everything was according to planned. The apartment is very well located, there are S and U-Bahn stations at a 5 minute walk, which will get you to the city center fast or any other place without a problem.
Other than the house, Alan and Kasia immediately provided guidance and tips on how to move in the city and gave us suggestions on what to look for.
I would definitely recommend their place and would happily stay there again.