Hi delphiandomine, thanks a lot for the suggestion. I think we may go out there very soon. One thing I could not find out from the website or trip advisor is whether the swimming pool, jacuzzi, and saunas are free to day visitors. We are thinking about going for the day and participate in 1hr spa treatments (or rituals in the sauna; what is it btw?). If you have done a day trip before, please let me know how much the swimming pool, jacuzzi, and saunas would cost? All reviews seem to talk about staying overnight.
FYI, the spa (including jaccuzi, heated pool, and saunas) was 45zl. This includes a tower & a pair of slippers. It isn't small-medium sized, but when we went on Friday, it was practically empty. Recommended for a quick trip from Wroclaw :)