It sounds great to me, assuming you have enough space, light, ventilation, outlets, etc. My dream sewing room plans include a little stackable washer/dryer, just for the sheer convenience. I'll probably never get to build my dream sewing room, but while I'm dreaming, the washer & dryer are there!
Lint might be an issue though. Our dryer vents outside but every time we pull the lint trap, lint flies out and scatters itself across the top of the dryer. So you might find yourself doing a lot of lint-rollering.