How is the warmth and friendliness of the staff? Are they calm? Do they have a good bedside manner? Is your pet comfortable around them? Good veterinarians and their staff know how to soothe a stressful situation.
Are they available when you need them, and are their after-hour emergency policies reasonable?
Are they aligned with your views on topics like euthanasia, cancer care, chronic disease planning and spaying and neutering? This can be important when faced with difficult decisions.