I have a cosy room near the centre ideal for a solo traveler or a couple. It's located close to Kazimierz, old jewish quarter and the Wawel Castle. Five minutes walking there is Forum, the club with nice electro music where you can also grab some good food. Even closer is the ICE Kraków Congress Centre. You can get to the very centre on bus or train, it will take about 10 minutes. The bus stop closest to my apartment is Centrum Kongresowe.
Please write to me if you have any questions ;)