My axolotls never seem to appreciate the hides i make for them and tend to dig their own lol. I have bits of wood they like to tunnel under, in the past i've used tank ornaments. I had a tardis at one point but they outgrew it.
I use 2 bridges I bought from a pet shop, I've put some rocks in front of them now to make it darker.
I have that bridge ornament and your tank and stand are exactly the same as mine. 3 ft?
Those bridges are perfect except when dood gets lost under it.