Real Estate / Flat 'shortage' in Wrocław [11]

Don't seem to find a decent flat in Wrocław. Our need's (either one of this would be fine):

1. 4 room flat (separate rooms), near to the center (not like 30 mins with the tram).

or

2. 2x 2 room flat (separate rooms) and again near to the center.

Important! we are no students and would offer a decent payment for the flat.

So I would really be greatful for some realistic offers. There are enough crazy landlords out there asking for unrealistic prices (we have some market experience by now). We also speak polish.

Many thanks!

norbert