I would suggest you post on the Camping Forum. They are very helpful over there. Havent slept on the couch but everything else about the cabins is great.
Stayed in a cabin summer of 2019... loved it. My daughter took the Queen bed.. my oldest son and granddaughter took the bunks.. my middle son and I slept on the sofa bed..
its was ideal for me but i prefer a tad stiffer bed than most. The best thing was there was not bar to create major discomfort..... it was very comfortable....