I did four kilos of laundry, including two comforters, a few weeks back through Laundry Express. They aren't cheap but they're very foreigner-friendly. 

http://laundryex.com. 

I have a pretty big cotton winter blanket (220x240 cm) that I need to wash. The washing machines near my school are too small, and I recently took it to a dry cleaners and they said that they are unable to wash cotton blankets because it'll damage it. Does anyone know of a place that will be able to wash my blanket? I can go there with my stuff to wash it, or if there's a service, preferably with pickup/delivery, not too expensive, and will do a good job.

Washing Massive Blanket