I'm lucky that the laundry is downstairs. They have camera surveillance, so I feel comfortable coming back here to wait while things are running.
They also use a card system, so I don't have to worry about maintaining a supply of quarters. Just put the card in a machine along with $5, $10, or $20 and it's added to the card. $1 to wash and $1 to dry.
If you can't see the bright side of life, polish the dull side.