It's fantastic and a far cry from Brighton!
I was given all sorts of doomsday warnings about rampant crime, but I've not found that to be the case. Sure there's a civil war going on with the drugs cartels beheading each other and the feds and the army mucking in (on both sides). But unless you're a drug trafficker, you'd have to be ridiculously unlucky to get caught in the crossfire.
The weather's great - it's always sunny, mid-20's degrees here in Mexico City, even now in December. I now ride sans-mudguards in full confidence I won't need them! And the mountain roads here are stunning. It took some time to get used to riding at >2,500m above sea level, but now whenever I ride at sea level I feel like superman!
The food's amazing and the people are so warm and generous and very chilled out but extremely hard-working. So different from the prevailing misconceptions about them being either "feckless and lazy" (Clarkson) or "hot tempered".
I love it here! The only bummer is that when I'm usually free to go on CycleChat, the time-difference means that you lot are tucked up in bed with the computer off!