We have a 34' Jayfilight that we bought about 15 years ago for 9,000. It is now at the BOL #2 and I built a pallet deck on cinderblocks, and used the old boards we had replaced on the deck at BOL#.
I used to spend summers in Estes Park living with (then) three kids and three dogs... while my middle son was at hockey camp in Boulder. Trying to "regular" camp for two months with all of those critters, was just too crazy. The RV made it much easier.
Ours has a shower and a tub, but the tub is so small...I like to SOAK up to my neck, so I built an outdoor "bath" to make do. I like it so much, that the "cabin" will have the washing facilities outside instead of in! Nothing more relaxing at the end of a hard day than a glass of red wine, hot as you can stand it water (I cheated), an aromatic candle, a serenade of creek frogs and a canopy of stars!
I have a portable washer but, no dryer, so that gets put on the fence for drying.