I highly recommend NWAR, a small family owned service focused on sharing their passion of RVing with others. They were excellent to work with as a renter, because we had so many questions. We loved it so much, we finally bought our own trailer and put it in their fleet. We were a little hesitant at first, but after considering storage, insurance, maintenance and tabs it was a no brainer.
NWAR has been wonderful to work with. They do it all, winterize, grease hubs, caulk windows, and fix all the little things that break under normal use. You get clear invoices every quarter, and if you ever have questions they respond quickly.