I've seen "toy haulers" that are designed more for dirt bikes, but would be excellent for cycling excursions.

You can stay in a lot of hotels for the price of a good camper, though.

We have a 28 foot bumper pull camper, with three water tanks (one fresh, two gray/black), which works pretty good for two people for shorter stays. If we will be camping for a longer period, we require a full hook-up camp site. Electricity, water, sewer, internet/cable TV, usually in that order.