We stayed at Lidia's for two weeks first, and we liked it so much that we decided to stay for one more week. You will feel like home there, there's a super comfortable bed and a nice desk to work at in the bedroom. The bathroom is shared but that never was an issue, the place is really close to the metro station and there's is a Lidl (great and cheap supermarket) on the next station (you can also walk there, the way is really nice).
Lidia and his son Kacper are both wonderful people, the communication was fluid and always enjoyable :) We would definitely come back!