They're a wonderful company!
We've been using Steam Clean Express for 13 years. We own an apartment building and they clean our apartments on a regular basis when tenants come and go. They also clean the hallways and stairwells. They're very good and very knowledgeable. They're very personable; they call you ahead of time.
Dan, the owner, has a science degree so he knows what he's doing. If you're thinking about using their services, I would say you'd be very pleased.