You know how it is... your friend invites you to stay for the weekend and
everything sounds great until they let slip the fatal word 'sofabed'. And
then it doesn't seem so appealing any more.

We've all experienced them - futons seemingly stuffed with old newspaper,
chaises longues that aren't longue enough, and folding contraptions with
fewer springs than a Trabant.

But surely it doesn't have to be this way? Do there exist sofabeds that
could actually be used as a full-time bed without a free admission to the
orthopedic ward?

Bonus points if they don't look like a bed when in 'sofa' mode, take
standard sheets, and don't take up vast amounts of space when unfolded - in
other words a no-compromises piece of furniture.

Anything like this around...?

Thanks
Theo