where about in Warsaw do you live ?
I don't live in Poland .... yet :o) Planning to make the move within the next two years, but still undecided between Warsaw and Krakow.
I have an apartment in Wilanow which is let at present.
I am in Poland , usually once a month, for anything between 1-3 days and 2 weeks :o), and either stay in hotels or with friends.
I've played in covered courts in Konstancin when a friend was based in Warsaw, but now he's returned to London I don't have anyone to have a game of tennis with. To tell you the truth I haven't played for over a year and would be quite rusty !
The courts I played on were clay ...and had a plastic bubble covering them.