A week? I haven't vacuumed in at least...a year?
GUYS! Don't want to sound like a total mom/mum here, but a dirty room does not a love nest make. Girls can be pretty funny about that kind of thing.
Actually, being quite serious, a dirty room/home will not help at all. Neither does excessive untidiness. If you get a girl back to your place, it really screws things up if she doesn't know where the heck to sit. Had a friend make that mistake in a BIG way early this year. We'd set him up with a pretty cute girl, but she got totally turned off by the state of his pad. Just a couple hours cleaning up before she arrived and he might well have been getting head instead of the brush-off.