The pros :
Management: Fair, helpful, and friendly. Upper-management/Members of the board here were some of the nicest people I've met in my life.
Compensation: Base pay in my department was above other positions of similar qualifications. Solid benefits as well, 403b, healthcare, dental, vision, PTO.
Overtime: Depending on your department there can be a lot or none at all.
Security: Once again not all departments are the same but mine was very secure.
Management rarely help-out if lower-level employees are struggling or understaffed.
My department was unionized and the raises were fixed and minute. This non-merit based system made it so very few employees put forth their best effort.
Lots of call-ins and open shifts. Employee turnover was very high in Nursing and Dietary.
The hardest part was the constant negative work environment. Many coworkers would complain. Furthermore "backstabbing" and gossip were a cornerstone of the culture there.
The most enjoyable part was the pay... The residents/patients there always had interesting stories to tell and they were a reason I took pride in my job.