Hi S,
I have been there last two September and posted a report of my 2010 trip in this forum (Destinations, a search should do the trick).
I love this place. To hook a 20+ pond fresh osenka is what I am looking for! It is definately not a numbers game, but when you are looking for big, fresh fish in a stunning scenery, this might be the place to go.
PM me if you have some detailed questions.
David
PS: Have already booked my trip for 2012;-))