The entrance is located directly behind the Bella Lifestyle Nail Salon and Spa and it's on the second level above the Comcast building.
Personally I am really excited about this as we have been driving to one in DC. This location still has openings for appointments in April so seems it's not too slammed as of yet like some of the others in the area.
Very useful addition to Riverdale Park Station!
Check them out and make appointments here: