You can gather information that will tell you things like:
Whether the nursing home is in a hospital
Nursing home inspection results
Per-resident staffing ratios, including registered nurses, licensed practical nurses, licensed vocational nurses, nurses’ aides, and physical therapists.
Data about quality of resident care, such as whether residents are losing weight, getting flu shots, or experiencing pain. CMS gathers this information separately for short-term and long-term residents.
Medication management
How the nursing home protects residents from mental and physical abuse
Fire safety inspections
This information will tell you if it's a place where the residents are seemingly well cared for rather than ignored as well as how they are run. the best thing to do though would be to visit the home and make the decision based on both your findings through research as well as your impression after visiting the facility.