I did some work for p&o cruises, on a ship that focused on round the world trips. These was one old lady there in her 80s who had swapped a nursing home for the ship - and had been there for 3 years or so. The food was incredible, she had diffent company every night due to other guests coming and going, was treated like royalty by the crew (unlike normal nursing home residents), and had an onboard doctor and nurse when needed. And all this was cheaper than any nursing home. Inspired idea.