Well, I only ever had one group that played in anything that remotely resembled a basement. (Mostly because, as previously noted, I live in Southern CA and we don't generally have basements here. And if we do, I've seen them, they tend to be very very small.)
The group played in the "game room" of one of the player's apartment building. We would all sit around the pool table and play. The only reason we were down there is that his Dad's apartment was too small for all of us. While this game room was not Underground, per sae, it was basementy in that stuffy, humid, crappy lighting, cinderblock walls sort of way.
It was vexing because the lights did not have your normal on/off switch. It being the public room for an apartment complex, the lights were on a timer. So after a while, the lights would just go out, and they never had the good graces to do this at a particularly dramatic or cool moment.
The other thing I never really got about playing down there was that the place was in Redondo. So we were literally across the street from the beach. So what were we doing in that dank game room when paradise was just outside the door? The answer being, of course, that "paradise" has a tendency to be windy and sandy... And, when the sun goes down, dark and cold. (Well, cold for California anyway.

)
All in all, I think people play where there's a) room, b) few distractions, and c) less chance of bothering people. A basement, or basement like room, usually fits all of those requirements.
The best way to deal with the problem, if you really don't like playing in the basement, and you don't want to ask the host if the game can be moved to another part of their house, is to invite the group to play over at your place for a few sessions.
Before the group gets there, set up where ever you feel is best at your place. After a few sessions of gaming in a cushy non-basement, they'll prolly want to move the session themselves if and when the game moves back to it's original location.