If you want your newly washed clothes smelling clean and fresh, avoid Mr. Wash. Their machines are filthy and do not work properly. I have noticed that the detergent is not guaranteed to drain into the wash. I have personally experienced this three times. Mr. Wash did refund me the money however, they did not refund me my time wasted. Machines do not accept coins but a pay per card. The cards are really inconvenient and are lost easily. That means lost money. The employees of the wash also do not speak English.
If you are required to use a laundry mat, try the one on 86th street.