Actually, we can't say this "This isn't a condo, or a townhouse, or something of that nature." In fact, Sunset Hills is not a "common building." Instead,
if you had checked, "Situated atop a hill on 52 scenic acres and bluffs, choose from spacious private residences including villas and apartment homes." The article doesn't clarify what type of unit this couple was seeking but it might have been one of the villas.
As you point out, various retirement centers can be quite different -- and in this case they apparently did a great deal of research, including spending a fair amount of time on the property and having conversations with staff members, and felt it would be a good location for them -- and that they felt they would fit in.
It's also worth pointing out that this is a retirement community and not a Rest Home. They people living in these Retirement Communities do not simply have rooms, they typically have full apartments with living rooms and kitchens. While many do spend much of the day in the common areas, or may eat in the cafeteria, there is no requirement to do so -- and many prefer cooking their own food and have their own vehicles. So much depends on the person or couple that move in -- many who move in want to keep their independence, even while appreciating the social opportunities offered, but like that if/when they need the food and transportation services that the complex has them available.
