The whole of the City is within walking distance; even the West End is no more than a healthy 30 minutes on foot. From my flat the Barbican tube station is 3 minutes' walk; and, when I need to use the car, I have my own(ed) parking space at the foot of my lift-shaft.
The site is secure and astonishingly quiet for its location; the Corporation of London is a reassuringly paternalistic guardian of the residents' interests.
And the icing on the cake is the Arts Centre. I have seen more Shakespeare, both in quantity and quality, here than anywhere else - and I once lived in Stratford-Upon-Avon! The world-class LSO is the resident orchestra. We can even come home for coffee in the interval.
Even the 'brutalist' architecture of the place grows on you (like fungus, you may say) after a time; and in any case is much ameliorated by extensive planting. The Conservatory is a joy.
And, if you live in the City, you can really see and enjoy it at the weekends.