My only feedback for this place is that its small, which isn't a big deal. Their Garage only holds about 2 cars with barely any waiting area space other than 4-5 chairs that are stacked up against the wall. You can sit and watch but they recommend you get a pick up and come back later. Or when they're not busy, one of them will offer to drop you off at Markville Mall (depending how long your maintenance is).
Their hands are obviously dirty so be prepared to receive your car key back with a bit of dirt/grease and be sure to wipe down your steering wheel and shift knobs. I can see these guys work with speed so don't be surprised if your car seat comes back with a little bit of debris on it.
I think they take cash only with no print out receipts. Although, you can email them and request one.
Parking can be tight as there is limited space. If its full, you can jump out and let them know as they'll designate you to park it somewhere nearby (usually the lot next door).
Overall, with the prices that these guys charged and customer service, I'm not gonna complain too much about the cleanliness. I'm pretty satisfied and will come back again. They even made honest recommendations on what needs to be fixed/replaced.