ARLINGTON, VA. — Washington, D.C.-based Kettler has opened m.flats Crystal City, an 11-story, 198-unit high-rise apartment tower in Arlington’s Crystal City neighborhood. Situated on the former Crystal City Post Office, m.flats was the first residential building proposed to the Arlington County Board since the adoption of the Crystal City Sector Plan in 2010. KTGY Architecture + Planning designed the high-rise to meet LEED Silver certification. The property features one- and two-bedroom units with washed oak flooring, quartz countertops and stainless steel appliances. Community amenities include a clubroom, Wi-Fi access, fitness center, bike storage and workstation, all-season courtyard with fire and water features, rooftop swimming pool, sundeck with cabanas, outdoor kitchens and entertainment spaces with outdoor seating and dining areas. The design team includes civil engineer and consultant Bohler Engineering and general contractor John Moriarty & Associates.