Our 2nd home is a mobile home in a senior park in Yakima, WA. It is 14x70, 2 bedrooms, 2 bathrooms, dishwasher, w/d, we have a covered double car port and storage unit on one side and a covered porch on the other side. The park has both single wide and double wide homes. The mobile home was already in the park when we purchased it, we didn't move it there. We spend our summers there, the rest of the year it is unused. Our neighbors keep an eye on it while we are gone.
The park has a recreation room, lots of activities, it's pretty secure and well maintained. We pay rent on the lot we're on. We opted to be in a senior park rather than a family park because the senior parks were better maintained. You do need a car to get around but it's located near everything you could possibly need.
Being a senior park, it has lots of rules which is a good thing in some ways but my DH has decided that at his age he doesn't like people telling him what he can and cannot do with his property so we will probably sell it and buy a small home next year.