As was said above you can rent through this site - there are lots of apartments available for rent in Bansko. Lots of new build properties mean the prices should be low.
An internet search should give you lots of options
After looking at the options on this site and searching the web, renting an apartment seems to be the best option. However we were hoping to find some kind of inn or youth hostel since we have heard that it might be cheaper.
Any tips?
BTW: In the first post i meant to say that we are looking for something in walking distance to the ski lift IN Bansko, not to the geographical area Bansko. And i meant to ask for who to contact, not how.
Martin Wake up how cheap is an appartment you could probally name your price as there are lots of appartments available, hostels all over europe are probally more expensive per night than an appartment beetween you and your friends.