I used google map, searched "Singapore Zoo", google took me to a deserted place near the military zone. Except for going the wrong way, everything else was fine.
- The zoo has buses, there are rest rooms with fans / air conditioning.
- The hygiene is basically clean.
- The animals are well taken care of, no signs of fatigue.
- There are vending machines, event areas, toilets, dry playgrounds and water for children.
- Online tickets just need to scan the code, there are vending machines / support staff.