We considered them at one point, but you lose a lot of storage space, and have to have a short and smaller refrigerator. I agree with the comments about purchasing an older unit, but if the price is right and you can do your own work, it may be good for you. For the past couple of years when we spend some time in Florida during the winter, I've noticed a couple that have a Trail Manor and I think they use it a lot. It's all about how you adapt and are willing to compromise. If I had one, I think I'd want to have a second refrigerator (bar size) that could be kept inside, or outside as desired. The 2nd fridge would be used for cold drinks leaving more room in the main fridge for food.
Whatever you do, make sure you look very carefully for any signs of water leaks/damage. When I traded in my 10 year old Sunline trailer, they found a small amount of water damage on the slide out that I hadn't noticed. So even is someone has really tried to maintain a rig, stuff can happen!
Retired but busier than ever!
2012 Newmar Bay Star 3302
5 Star Tune, SumoSprings, Roadmaster Steering Stabilizer, Blue Ox Avail
Brake Buddy, 2015 Chevy Malibu