Hello and WELCOME, Mary!
You are not going to wear out your friendships here, so go ahead and start asking questions...(those are the real reasons we all hang-out here...in order to converse, learn, share, and help others with out own solutions... we WANT to exchange ideas.)
I've never rented out personal belongings ...(boat, airplane, motorcycles, etc.) to strangers/travelers. I've loaned a few times to trusted friends, and that's usually worked out fine, but renting involves an entirely different level of trust, in my opinion, and I've worked too hard to get them to consider renting them out. Hopefully someone else might be able to pitch in with that experience.
I CAN however, tell you that the 22'Sport is perhaps the sweetest little first-Airstream you could choose, and that my wife and I consider it a perfect size for us two...and the occasional grandchild in-accompaniment.
We've discovered a few shortcomings common to the 22' Sport:
1- The shower accordion-door, lower guide is not well-sealed and will leak from it's ends, contributing to damaged floor if not resealed properly.
2- The black-tank-flush anti-siphon valve is a defective design and will eventually fail such that it will not allow the tank to be flushed-out and will drip water inside the wall. (Look inside your wardrobe, aft wall, and remove the small access panel. The antisiphon valve is located there. If you are careful to never allow an unpressurized garden hose to remain connected, then you should have no problem simply removing that anti-siphon valve and replacing it with a 90-degree fitting using "shark-bite" type connectors and PEX tubing.
(One other thing: The wardrobe floor is removeable... simply pry it up, and peer beneath, to see the carelessly-installed wiring, etc. laying down there. Your water pump is there, and next to it is a screen inside a clear, hand-tightened cover....which will leak eventually and need to be retightened. I mention this so that when you discover water seeping from beneath the wall near the electrical converter... you'll know where the leak originated.)
3-The 22' Sport is excessively low to the ground and the axle-lift kit from Dexter will improve ground-clearance to better protect the sewer-drain valves from damage. (7.5" of clearance improves to 10.5")
4-There is only one, too-small towel-bar on the aft side of the bathroom door.
We installed three stainless bars from a home improvement store, using "binding screws" through the hollow door because ordinary screws cannot support the weight due to that hollow, foam-core door. (I'll try to post pics of our chosen modification.)
5-(This does not apply to the 2017 year model, but earlier ones):Be especially careful when closing-down the galley-sink that the swing-arm spigot does not open the small water-valve. If the pump switch is left "on", your fresh-water tank will empty into your grey-water tank (or worse, overflow that tank into your shower-pan and possibly onto the floor.)
6-The refrigerator condenser-fan (outside, upper-access-door) is noisy and short-lived. We replaced ours with two, 12v
computer fans wired in series,
which allows them to run on reduced electric-draw, more-quietly, and move a greater/wider air-flow.
7-The original LPG tank "pigtails" (the short hoses that connect directly to the tanks with hand-wheels) became hardened and leaked at the crimps near the 1/4" NPT brass fittings at the regulator and required replacement. The originals were about 8 years old when I discovered the source of the occasional smell of leaking gas.
8-I feel this little trailer really needs a rear bumper. I installed the Airstream rear bumper kit for this series trailer and feel it made a large improvement, not only in protection for the trailer, but also in useful storage space.
9-This trailer really needs a better "porch light", such as what is known as a "scare light". It would be easy to install by wiring directly to the same switch which operates the small step-light, by installing the scare-light on the outside wall, on the other side of the switch.
Hope this helps.