Am I wrong about feeling hesitant about this? ?

My grandfather and grandmother are going to be put in a home, my uncle as well because grandma and uncle have alzheimer's disease. I want what's best for all of them. I just worry about them being victims of neglect. My aunt told my uncle she doesn't love him and never did. I know he'd be better away from her but I still have doubts about nursing homes. Is my concern valid? Help me