Also surprised to hear such comments! I was there recently (took my son for a walk on the grounds) and I noted two men working in the gardens, clipping hedges and tidying. The area seemed quiet and well-maintained, not dissimilar to the apartment buildings at Bushy Park.
Maybe try visiting again, and it might be worthwhile seeing if you can find information from the complex management company - it might provided additional insight into the profile of the complex?