I would have loved this service when I was in grad school. I lived a mile from the nearest laundromat, and I would have to put a load in my backpack and truck it over on my bike. Laundry took literally all day to do. Add in bad Florida weather and the experience was downright miserable.
I wonder if it would be cheaper to crowdsource laundry service, like an airbnb for laundry. My washer is unused all day and it would be awesome if I could rent it out. My roommate tends to be at home too during odds times of the day and probably would be willing to do loads if it meant getting paid a nice fee.