@DavidBrown I had a nice visit and thought it was a decent zoo overall, but a step or more down from the other major European city zoos I visited (London, Prague, Amsterdam). From what I've read on here, this was at one point one of the worst major zoos in Europe so it seems they've made significant improvements.
The hippo and elephant enclosures stood out as poor and there were several others that were a bit outdated though passable. I remember really liking the marmoset/tamarin exhibit area and the Brown Bear and Maned Wolf enclosures. The Chimpanzee exhibit above was also a positive.