resort and recreation area(With a reputation as one of the Midwest's best resort and recreation areas, the lakefront is a key attraction for all seasons – Michigan City Area SchoolsTamerlane)
Holidating(due to a long distance relationship, dating only when one, or both parties are on holiday or a big vacation and are together during that time period drag)
therapeutic resort or facility or treatment center(In the US the use of the word "sanatorium" is associated with mental care – like in an insane asylum. The word is used seldom at best and only by well-travelled people. Maggie)