Travel / KRAKOW-visit next week [11]

Hi i have been given a free flight to krakow.
was hoping to have get some info.

1 can anyone recommend cheap hotel or guest house near the town centre!

2 what should i make a point of doing- sight seeing etc

3 where should i go for a night out?

4 are there any foods i should defineatley try?

5 one for my brother how much does 50gr of golden virginia tobacco cost?

thanks in advance really looking forward to this never been to poland before!

Life / Post office in Krakow? [3]

can anyone tell me where to find the post office in krakow?