i have rented houses for years and i've had some good tennants. what ur going to find is that the wear and tare is greater from a tennant than if u lived in it.
once they become a tennant, there are different rules: it's their house, u can not go in without their permission. law ususlly requires u to give them 30 days notice to evict. there are minor exceptions like taring up the place or failour to pay rent but u still have to go thru a process. if they don't leave on ur notice, u have to go to court to get a formal eviction.
If they up and leave without giving u the keys or telling they are leaving, u have to go thru an eviction to gain access to it. if u don't and they left anything in there, they can accuse u of theift...they can claim that even if there wasn't anything in there.
you will need a different type of insurance and i would put the liability with that policy. u can put a rider on ur homeowners for liability but it is best to keep them seperate. the cost of the insurance is usually cheaper. all u can insure is wind and fire (if it were a nice house, u can get a landloard policy which perils, liability and loss of rent. they won't write this unless the house is worth over a certain dollar amt). the contents (their contents) falls under their renters policy.
here, if a tennant gives u a hot check, the DA won't touch it. you are not treated the same as other businesses.
notices between u and them has to be in wrighting. you need a rental agreement that states the terms, who is responsible for what, and ur wright to inspect (u still can't go in without first obtaining their permission though). take pictures before they take it and make them sign off on the condition of everything.
in short, on a travel trailer that i may want access to, i wouldn't do it.