I found the Tropical House reminiscent of that which used to be at Veldhoven (and possibly still is there): a conventional middle bit, with rather dark and unattractive cages around a first-floor walkway. This one was also contained a worrying number of rodent visitors, which appeared to be remarkably bold. If I was over-seeing a collection of free-ranging birds, I think I would be dee to do something about this issue.
Given the pretty nice bird collection in the tropical house and concerns for their safety and health a rodent infestation in the tropical house is very concerning to hear about.
I was kind of planning a revisit to Pakawi Park (now formerly the Olmense Zoo) the next time the weather is good but what you and Snowleopard wrote and showed doesn't sound all that good and so I'm kind of starting to second-guess that idea. I was really hoping the zoo would have improved more already under the new management but I guess more time will be needed.