Thanks to the excellent directions supplied by kerinski321 we found this beautiful bath house. We took our own towels but you could hire towels (deposit required but cost following towel return is only 500 HUF). Make sure that you shower fully (take soap etc. with you) before entering the complex and then relax in the various pools, saunas. Three hours for 2800 HUF and it eases the aches and pains of a long day walking. I took advantage of a 30 minute massage which also increased my feeling of wellbeing. You get a locker for your personal belongings and there are various signs on the saunas reminding you NOT to wear sandals inside the sauna.
It was a long walk from our hotel to the bath so we opted for a taxi back (booked by the hospital reception on our behalf) which cost a couple of thousand HUF but was worth every penny. A peaceful retreat that needs a visit.