Some people can sleep easily on trains and some can not. I think most people are in the middle. So it depends
I've only been in lower level Superliner roomettes a couple of times. It's a mixed bag; it is nice to be close to multiple bathrooms and the shower, and easier to get on and off at stations for a short walk (or a very long walk if you get stuck in Winnemucca for 3 hours because your crew has timed out and the replacement crew had a really late arrival and needs to get their sleep in!) but you do have to go up stairs to go to the diner or lounge car. I rarely need to call the attendant, but it seems a little easier to call them or get their attention on the upper level.
I haven't found a noticeable difference in the ride quality. I think it depends more on the track quality than on the level, though being over the wheels is supposed to be slightly rougher than in the middle of the car. The four lower level roomettes are closer to the middle than most of the upper level roomettes. I think they are directly under roomettes 1-4, closest to the middle, so should be smoother than 9 & 10 at the end of the top level. Maybe it sways more up top, but I haven't really noticed.
The view is definitely better on the upper level, but it is easier to get to the door/vestibule area on the lower level, where you can look out the windows on both sides, and there isn't usually a crowd except at or near major stops.
One time on the EB going west, I was in #14, next to the family bedroom which had a mom and 3 rambunctious (noisy and talkative but generally well-behaved kids) and by 9PM I was getting worried about the noise, but they quieted down before 10 and I didn't hear a peep out of them all night. They got off somewhere in Montana (while I was asleep) and so it was dead quiet the rest of the way.
Finally, I don't get why someone would change from a SL lower level to a VL... ALL the rooms on a VL are on the lower level!
I've only been in lower level Superliner roomettes a couple of times. It's a mixed bag; it is nice to be close to multiple bathrooms and the shower, and easier to get on and off at stations for a short walk (or a very long walk if you get stuck in Winnemucca for 3 hours because your crew has timed out and the replacement crew had a really late arrival and needs to get their sleep in!) but you do have to go up stairs to go to the diner or lounge car. I rarely need to call the attendant, but it seems a little easier to call them or get their attention on the upper level.
I haven't found a noticeable difference in the ride quality. I think it depends more on the track quality than on the level, though being over the wheels is supposed to be slightly rougher than in the middle of the car. The four lower level roomettes are closer to the middle than most of the upper level roomettes. I think they are directly under roomettes 1-4, closest to the middle, so should be smoother than 9 & 10 at the end of the top level. Maybe it sways more up top, but I haven't really noticed.
The view is definitely better on the upper level, but it is easier to get to the door/vestibule area on the lower level, where you can look out the windows on both sides, and there isn't usually a crowd except at or near major stops.
One time on the EB going west, I was in #14, next to the family bedroom which had a mom and 3 rambunctious (noisy and talkative but generally well-behaved kids) and by 9PM I was getting worried about the noise, but they quieted down before 10 and I didn't hear a peep out of them all night. They got off somewhere in Montana (while I was asleep) and so it was dead quiet the rest of the way.
Finally, I don't get why someone would change from a SL lower level to a VL... ALL the rooms on a VL are on the lower level!