SAN ANTONIO — The Milestone Group has acquired Archer Stone Canyon Apartments, a 228-unit value-add community in San Antonio. According to Apartments.com, the property was built in 2005 and offers units in one-, two- and three-bedroom floor plans. Amenities include a business center, clubhouse, lounge, fitness center, pool and a playground. The Milestone Group purchased the complex through an assumption of the existing Freddie Mac loan. The purchase price was not disclosed.