There are so many hutches like this around... as to whether it is big enough, it seems to depend who you ask!
A lot of the pet shops sell hutches that are really small (3 feet). but on the other end of the scale I looked into adopting a rabbit from a shelter around here and they have a minimum requirement of 2m x 2m x 1m which is pretty massive. the hutch my boyfriend is building is 1.5m x 60cm x 60cm roughly from memory. so um what is big enough seems to depend...
this is probably a pretty obvious thing to say but the good thing about the double story ones is that you get twice the room for the length... if you know what I mean. but a double story hutch isn't an option for me because my boy bunny is disabled and wouldnt be able to get up the skinny ramp.
It looks to small for one rabit much less two. Storm has a 5 foot wide3 foot deep 2 level cage and I feel like that is to small for him he is a netherland Dwarf. But my aptions to go bigger is not there right now