@Antoine I wouldn't exaggerate, if I rate it among the best, post-soviet Ape Facilities, both indoor and outdoor. Very functional and well designed. Seriously contrasting against some other parts of the zoo. Looks like Bratislava started something good, but the process was terminated.
Arriving of the Lesser Kudus is a good sign, though. The place is just an hour away from Vienna Airport, but Schönbrunn puts havy shadow over it, I believe.