[cypher]

I can't quite see the join & access either but it does look like a nice amount of space now.
Agree that you do need to put more things in there, bendy bridges are good to climb on & hide under, small cardboard boxes & tubes would be good too, mine love the egg boxes, I usually put some substrate in then hide some food or treats in there for them.
You could use a cardboard box to make a bigger house too.
It's hard to tell from the photo but what size wheel do you have? It looks a little small but not sure.