New bed for ds, 11 years old

[admylin]

Ds is in need of a new bed.

He's on a matress at the moment and thinks it's great and wants to stay that way but he does need a bed.

I've looked around but can't decide, should we get him a big nearly double size bed already or a normal single? I suppose a futon would be OK too. Any tips?

[admylin]

Ds is 11 by the way. No ideas yet so he's still on the floor. Have browsed Ikea website but either too big or too babyish.