I bought one for my GPs to use in their outdoor run. (Lakeland Limited £16)
I make sure it goes in the shed at night (it's wicker ) and thankfully they haven't eaten it yet.
They can both fit inside, there's a little 'tunnel' that one will block to annoy the other one (typical).
Someone on the Lakeland Website uses it for rabbits. It would depend on the size of the bunny though.