Having recently had one of my sweet little angels killed at a Sydney facility, I have a clear idea of what I SHOULD have looked for
1. Owner and staff who don't just know but very obviously LOVE dogs. who are happy to spend time answering all questions and allowing a complete inspection of all facilities.
2. Facility under active supervision at all times
3. Someone on hand to Immediately take the dog to a nearby, highly experienced vet in need.
4. Large, individual runs that are absolutely secure and have some degree of separation between each run. The entrances to each run should lead into another secured area - so that no dog can escape completely. Sheltered area that is open enough to allow cooling airflow, but can be enclosed somewhat for winter warmth.
5. Capacity to ensure that small and large dogs - or dogs that are otherwise incompatible - are kept completely separated- that is, absolutely out of eyesight of each other. Not in adjoining runs.
6. guarantee that feed times would be fully supervised to ensure that each dog eats its own food
7. allow own food
8. Special large exercise yard and special exercise time grass and trees and maybe a pool
I could go on.....but hope this helps