Where to Find a Retired Part-Time Super?

[On the Road]

My girlfriend has several rental houses in Baltimore (some split into rooms) and spends a lot of time on maintenance. I have been encouraging her to offer a basement apartment free in return for a certain number of hours of maintenance and other work such as showing rooms to prospects. It's not enough for a full-time employee, but I think it would be ideal for a single retired person who could use a free room and wants to stay active.

Does anyone have a suggestion on what organizations she might contact to find such a person? I think that an organization or maybe a church group would be a better source than just putting an ad in the paper.