Beds

[Dreckly]

Hi I am considering converting my Custom Trend LWB 2014. Into a full blown camper, having made a bed and cupboards we just put in when required. Now the biggest thing that puts me off until I get an answer, is how comfortable are rock n roll beds ? Every photo I see it looks as if your head needs to be cabin end and there are seat belts to sleep on and a couple of dips where the cushions fold up. Is it supposed that a thin mattress needs to be put over the top.
Thanks
Dreckly