I see what you mean. Interesting. At least a couple specified "Equipment for the deaf: Yes" so possibly the website doesn't differentiate various accessible needs, and that's why it appears when you check off "wheelchair accessible" but they aren't truly. None of the 5 I looked at just now gave much detail at all about accessibility. I think it would definitely require a phone call to get more details.
Hopefully someone else can share experience with one of these properties.