Went to Wroclaw last year in May and it was a very good weekend. Can't recommend it enough. Very much a young person city, good nightlife, very friendly people and a nice looking place.
If fact best compliment I can give it is going back this year but unfortunately cant go in may this year.
So i was wondering will the city be as good in June? When do the students finish for summer? Read on some forums the city is a lot quieter??