Silverleaf you sound amazing! I like a mix of ages round me, keeps me younger in spirit. My father and mother moved into sheltered accommodation, they had the show flat, a sort of bungalow attached to the main building, the living room was a good size and two bedrooms okay. Communal grounds they were not allowed to tend, but amazingly they were allowed to keep their dog (most won't accept pets). Wardens changed on a regular basis, some better than others. There were no organised activities other than anything the residents provided for themselves in the common room.
As others have mentioned, the management fees were a bone of contention, and a community of over 70s doesn't provide mutual support, more a mutual moaning ground! Grumpy old men and women seem to fall out more easily, and when you are living on top of each other, it is worse, though when my mother died, I think my father was glad not to feel alone, even if some of them were a bit touchy.
When he died it was a nightmare, two and a half years of having to go back and keep the place maintained, estate agents were absolutely useless, and in the end it was bought by another resident who wanted the bigger accommodation, otherwise I think it still might be a millstone round my neck!