Stayed there during a brief trip to greater DC and MD.
Once lived in the area, and had heard good things about this Comfort Inn near intersection of Shady Grove Road & 355. I was pleased. Had a later start from my point of departure, so I called reception informing about my late arrival. No worries, per Sandy. (Thanks!) I finally arrived very late, and Frank at the desk was courteous and helpful checking me in, saying I could stay to noon if I wanted. Had to leave around 11:00 a.m. anyways.
The hotel was convenient, and room clean and comfy -- as advertised. A nice, light breakfast. Will stay again.