Indeed but we've discussed that before.
Seriously though, every otter house I can think of in the UK is basically just a shelter, at least these guys have a pool they can use indoors if they wish to. Are they normally better in Australia?
The one thing i really dont like here: Judgement of an enclosure from just one pic... You dont know anything about the exhibit, but some of you write if they were there when it was built...
Behind this there are backgroundcages. There is substrate, there is enough space, they can always use the outdoors...