Law / Moving back to Krakow: PESEL, bank account, passport, TEFL, work, accommodation [6]

I'm moving back to Krakow in 6 months and just need to check I'm covering all the bases and putting everything in place before I go.

The last time I lived in Krakow I had a Polish girlfriend, so she did a lot of the work for me as I speak limited Polish.

I have a PESEL, a Polish bank account and (I think) I have work sorted out with the old language school I used to work for. However I need to sort out a place to live and I don't have the aid of a Polish person to stop me getting stung as a foreigner.

Any ideas where I can find a room or bedsit to rent which isn't a dump or full of damp and mould?

Also, have I missed anything?

PESEL - yes
Bank account -yes
passport - yes
TEFL - yes
Work - Yes (I think)
Accommodation - no

Also, any good expat groups? initially need a social life until I get established again.

Thanks folks
Brian