I can verify that at least three of the rooms were filthy. What I remember the most about the place was the abundance of wildlife in and around the teachers' dorms. ( A couple of teachers played mouse hockey when they got bored). That and the black mold on the walls and ceilings.

Ah, Kurt, with a forename like that, you are most likely a German, am I not right?. Where I'm teaching right now in China, a German couldn't hack it - he only lasted four calendar weeks! Were you to be a non-native speaker of English, be prepared for that to be brought up time and again against you, if you come to China.
Also realise that filth here is acceptable, as are mice in the apartments and classrooms. Statistics show that 50% of foreigners go back home early from China, which 1/2 will you be in? Yep, mice here are too shrewd to allow themselves to be treated like hockey putts/balls, unless they're dead, that is!
You can settle for better accommodation and vermin-free classrooms at training centres, but there is a downside there - most likely you'll be sent packing after a while on account of your accent and/or inability to be a source of entertainment for your lazy and spoiled students there.
If I were you, I'd seek a backwater public school, and put up with the occasional mouse and the mouldy walls, in the knowledge that it would be damned hard for my employer to replace me were I not to be what he (or she) had expected me to be like at work as a teacher or after work as a socializer with the local talent. YOU HAVE BEEN WARNED - TREAD WARILY!