All my tanks are in my bedroom, considering the fact that it is the only space in the house that is "mine." Four of them. The filters I have are pretty quiet, the only noise is if I forget to top off the tanks before I go to bed. There is a subliminal hum from some of the airstones, but I don't hear that anymore.
It's true, the ladies like watching fish<G>. My boyfriend also has his tank in his bedroom. I think he did this on purpose because, well, it's the first room of the house I always head to when I visit, to check up on his critters of course!
~~Colesea