For me, writing requires a certain mindset and generally a quiet environment. No radio, no television, nobody walking in on me every 10 minutes. Beyond that the location is nowhere near as important as whether I'm in the proper mental state to write.
I had been working on something last night, and it was finally starting to roll a little. Then this afternoon, when I would have had my next chance to write, I find I'm not in the proper emotional or mental space to do so (thanks Boston Bruins).
As for going somewhere to write, unless it was somewhere close or a separate part of a house where nobody else was allowed to be, I'm not sure it would work real well for me. It might work for getting ideas, themes, etc... but not necessarily for sitting down and writing because if I wasn't in the mental space or mood to write it would just be wasted.
BTW - Nice to have you aboard the crazy train for the ride that is USMB, smokin_kat.