There's a swimming pool? Well, last time I checked, there's plenty of 'em all over the country.
They have mountainbike trails? Number 1: there's plenty of tracks and bridleways etc all over the country just take a map and drive out of the city a few miles and get started. Number 2: any mountain biker will tell you Wales and the Scottish borders are where all the proper MTBing in the country is.
They have tennis courts and other sport facilities? There are leisure centre's all over the country where you can do those things for less money
They have health spa type facilities? Isn't a health spa cheaper seeing as you don't have to pay for accomodation?
They're a big feckin rip off for people who don't know better!