How about one of these?
http://cgi.ebay.com.au/FULL-GLASS-BODY-SPA-MASSAGE-SHOWER-JETS-BATHTUB-RADIO_W0QQitemZ200343536165QQcmdZViewItemQQptZAU_Shower_Accessories?hash=item2ea567c225
we had something similar in an ip with a smaller area put this in an incresed rent achieved of $20 pw