We just returned from a week in Montana, temps were down to 22 F a couple of nights, low 30s the others. The hypervent did great - we only had condensation over the hinge, also. Not worried about that, because it never touches the mattress. Rained 4 of the 6 days/nights, and even snowed one! (Happy, happy SNOW dance!)
I folded down a second bed in our X23F, and used it for storage (on top of the mattress). Not even a hint of condensation under that mattress. No body heat, no condensation.
I love camping!!!
2015 X23F/2013 Ford F150
“An adventure is only an inconvenience rightly considered. An inconvenience is only an adventure wrongly considered.” G.K. Chesterton