Make certain that you get a lease contract and require a security deposit too.
The contract should state that the leasor bears no responsibility for any damage that may occur while the RV is on the property. Also no responsibility for any stolen items and so forth. You never know what kind of nut will lease from you and you have to protect yourself from all angles.
The security deposit will help in case you get a deadbeat that dumps one on you. Although you can do like Public Storage and after a period of time auction off the contenets of a shed I don't know how this would work for a vehicle that is titled. Plus when this is done I have heard where the person that lost their stuff came back and set fire to the place............
Lots of nuts out there so protect yourself as best you can with a well written contract.
Your building looks great. If there is a lot of traffic in the area all you really need to do is put up a sign to let people know that your renting and put the phone number on it. That and the phone number inthe book will probably be all you need and it should fill up fast.
I am assuming that your stalls are 32ft from your previous post so that does limit it a little since some motorhome owners would like such a place to store their units, but I do thinkg a stall should be worth $150 anyway.
Good luck with your new venture!
Just adding my 2¢ worth
1975 31ft Sovereign International
........Rear Bath Double Bed Model
Tow Vehicle:1999 GMC Serria SLE Classic 1500 5.7Ltr
System: Jordon 2020 Ultima Brake Controller
Hook-Up: Equalizing Hitch and Sway Bar