At the time it was the Bellevue-Stratford Hotel.One significant difference between bacteria and virus is that outside a host viruses just keep dying (becoming non viable, dying may be a wrong terms sinc they are never really alive in the first place) exponentially, until they are gone. Bacteria on the other hand don't necessarly die for just being outside a host, but under certain circumstances like poorly maintained air ducts of an HVAC system, they can even form colonies and grow in the moist cool environment and then launch themselves into the air stream.
I don't remember the specifics of the Legionnaire's Disease, but just thought I'd mention this fundamental difference between bacteria and viruses.
Another aside regarding virus found on surfaces, what has been found is segments of virus RNA which is what the typical PCR test can detect. Whether said RNA is from a viable virus that can actually infect someone, or is just floating around from a non viable virus is not something that is tested for typically. There are a few publications that have done so and typically vaiable viruses are not around for the days and weeks that some oether papers talk about. Afterall it is important to get the damn paper published as fast as one can instead of doing the much much heavier footwork needed to try to infect something with the stuff from the surface and see what happens.