I thought you probably had something that couldn't be seen lol! The house looks nice. You could maybe put a bendy stick bridge over the door if you have one - I had a guinea pig house once and the doorways are really big - it helps keep it dark inside - although he may just stuff the doorway up with substrate to block it off, but they do seem to like a bit of a tunnel entrance to the house.
The main thing with hanging toys and tubes is to try and put them so they make a kind of "route" from one place to another as then they are more likely to use them
And also to make sure they can't fall down lol.