Situated at the intersection of several of the Excelsior's main drags, Clean Wash Center's giant, showroom-like washing area offers banks upon banks of high-powered, high-volume machines, and corresponding banks of windows for your people-watching pleasure. And this spin cycle never sleeps. Clothes go in and out 24 hours a day, and customers enjoy free wifi, a giant television screen, and monthly prize drawings — you can win a mountain bike while washing T-shirts. If the guaranteed 44-minute washer-to-dryer-and-out is too long, you can drop off soiled linen. Dry-cleaning services are available, as is a detailed stain-removal guide for extracting the mundane and the embarrassing from memories as well as muumuus.