Christies Beach Residential Care Services. Bonney Healthcare Group is the private operator of three High Care Residential Aged Care Facilities. The Facilities incorporate the Hills, City and Sea and are located at Hahndorf, Klemzig and Christies Beach in South Australia. Bonney Healthcare Group prides itself on striving for excellence across all standards of care for Residents and this is reflected in each site being fully accredited as per the Aged Care Standards.