My brother had one, white plastic box, but we used to stay in it on his drive when we visited…. It was actually very comfy… but not to own thanks. An Eriba though, like that one Nick posted above your post… I think they’re rather lovely. The Wilmas off here we’re selling theirs a good few years back, was very tempted but it was a two birth I think.
Ours was a 3 bedroom static. We lived in it far longer than we should have due to planning laws and where we lived at the time.