My son sent me a link to a Ted Talk by Alison Killing titled "There's a better way to die and architecture can help". She looks at buildings where death and dying happen. Brunelleschi’s Ospedale degli Innocenti in Florence is one project highlighted. It includes many features that promote a healthy environment. Natural daylight, fresh air, courtyard to name a few sustainable design strategies.
The Ted Talk reminded me of my grandparent's farmhouse.
When I was a young boy I remember visiting my great grandmother at the farm house. The farm was still run like a "farm family” farm. The elders took care of the babies until the elders weren’t capable. The family took care of their elders. The house had a bedroom off the living area on the first floor, specifically for the elders as they glided toward death. At the time of death, the body was prepared and the bedroom became a viewing area. There was a porch off the bedroom that was used by guests to pay respects. The body was taken through the door to the porch, it never passed through the main house.
Families taking care of family members at home in the elder’s comfort zone is best for the elders. The human aspect of care is much more important than the building where it occurs. If it can't be in the elder's home, then search for a facility that has a healthy environment with many natural design features.