I had a screen room, I didn't like it but some do.
Before you buy your screen room, look at the Eureka Northern Breeze tent (with walls). This tent takes minutes to build s(VERY good quality) and you can also bring it real close to your trailer. If the weather gets bad, you have to bring in the awning which includes your screen room, you are aware of that right. Many rainy days my kids stay in the Eureka and play cards etc... Great addition if you have a smaller TT.
The Eureka screen room is free standing, has solid walls that can be brought down if weather gets bad or if you need some privacy on your site. The mesh is good quality.
I purchased a Carefree screen room, I could never set it up right, never snug against the trailer. Basically a $500.00 mistake for me anyways.
ps. I swear I don't sell them! haha
Oh it comes in blue or beige. I got the beige, REALLY bright inside. Blue I have heard is too dark.