can you be more specific about the problems?
I can only tell you the facts - there's a forum that is probably the definitive forum about ESL called "Dave's ESL". Regent School have been very very proactive in making sure that any criticism of them is removed from the site - do you really want to work for a school that does such a thing?
I also know puddddddin quite well - and she was left with a very unpleasant taste in her mouth about the place.
There's also the fact that if you have problems there, it's going to be a lot harder to find another job/hours there than in a major city - essentially, you'll be tied to the school.
The "word on the street" is that they resort to hiring teachers blind because no-one in the country would go near such a place. They also seem to hand out a lot of "job offers" in the true Polish style - it really isn't worth anything unless you get a signed and sealed contract.