http://www.ada.gov/svcanimb.htmBusinesses may ask if an animal is a service animal or ask what tasks the animal has been trained to perform, but cannot require special ID cards for the animal or ask about the person's disability.If you have additional questions concerning the ADA and service animals, please call the Department's ADA Information Line at (800) 514-0301 (voice) or (800) 514-0383 (TTY) or visit the ADA Business Connection at ada.gov.Ofgift

Other than the obvious, tell your manager to look out for liabilities (trip and fall, ADA stuff, etc.), you don't want to get sued.

Anything that looks or feels like an ad, a promotion or solicitation would taint the transaction.

The ADA says Service dogs and ESDs must not show aggression and be under control of the owners at all times.

I've been working on a business plan for it using the senior living housing model without the ADA/medical component. 

Consider calling the ADA hotline and ask your questions there.

This was accomplished by converting the entire garage space into beds and bathrooms( including one ADA bathroom), and converting the master bed and bath area into two Jr sized master bedrooms and baths.

Should I consider an ADA Bath?  

I dont want to ask any questions about it. my question is there any risk in having a disabled person in a non ADA unit?

Maybe a walk in shower with the window sealed up outside and inside and some nice sheet vinyl on the floor.Add a hand held shower head on a metal hose for hygienic purposes and to make cleaning the shower easier--many of them cost little, and an ADA bar or two to help prevent falls.