I would tour them all (in the area you are thinking of). Look at the units. See if there is "memory care." Depending on his issues (it sounds like vascular, not Alzheimer's, but that could be wrong), he may or may not need a locked unit. The locked unit is to keep residents from wandering and getting lost or hurt.

My personal favorite, when it comes to "grading" a facility of any kind, is staff. Beautiful rooms, etc. are all very nice. But it's the staff that counts. Watch how the upper level staff - nurses, etc. - treat the hands-on CNAs. If they are disrespectful to the hands-on people, there is likely a lot of staff turnover, and that is hard on the elder. Observe the residents. Do they all seems docile and drugged or is an effort made (within reason) to engage them? Do they have choices of when to eat and what type of meals (again, within reason).

Visiting homes at different times of day, observing staff and how they treat one another, and observing other residents is actually more important than a guided tour. I would try to speak to the administrator, too, to see is he or she seems approachable. But do look around. The kind of place isn't as important as how he will be cared for when he gets there.

Take care and good luck,

Carol