Well, my university is giving a 10 day vacation between the summer and winter sem. Could someone suggest which part of poland to visit!? (I've already been to sklarska poremba and krakow and i live in warsaw).
Depends on what you want to do.
Yes, you have to tell us what your interests are for us to answer your query properly.
Maybe skiing in (or just enjoy) the Polish mountains. Many cozy places there.
Good suggestion. Recommendations for Zakopane
And just in case you did not see some of the things in Krakow included, read through this Recommendations for Krakow and Myślenice and feel free to contribute.
I will add that Zakopane has many Polish tourists this time of year.
If you enjoy skiing there are threads about it, use the search box in the top right of this page, type in key words.