Bay seniors who prefer jacuzzis to rocking chairs will find new heights of relaxation at Banya, the neo- bathhouse near India Basin. It is a refreshed version of classic Russian banyas, Turkish hammans and Swedish saunas. Their menu includes heat, steam, ice cold pools, herbal and mineral baths but the highlight is their venik platza should you feel the urge to be lightly thrashed by twigs. Tea and beer bars, of course. When the fog lifts there is an outdoor deck with a Bay view. Basic session $30.