Ballston-MU is a well-maintained metro station that serves both the silver and orange lines. The station features picturesque ceilings and platforms, making it a good spot for photos. Signage inside is clear, making it easy to navigate, and the station is relatively quiet and clean, especially on weekends. It offers access to many bus routes with shelters that display live arrival and departure information. Staff members are helpful and friendly, providing assistance with ticket machines and directions. One staff member was notably attentive, taking extra time to help with phone card issues, demonstrating excellent service. The station has two flights of stairs or escalators for entry and exit. Located in a busy commercial area of Arlington, the station is surrounded by high-density real estate, and there are no vagrants in the area. Despite ongoing construction at one entrance, foot traffic remains light, and the station remains a convenient and clean transit option for travelers and visitors alike.