IIWY, I'd pay day use at a gym/spa like at the High Sierra. I'm sure there are cheaper options, but he can take a shuttle (RT). A good steam and a jacuzzi is just what he'll need to rid himself of the Playa grit. So look at day rates for the spas at all the big hotels and see which one is better/cheaper. That way he can take hotel shuttles and save on cab fare.