Rubén helped me with a personal request that made my trip to Mexico City a BLAST and he is quite the intelligent and artsy character. His building is totally groovy and the vibe is so friendly there and the open window in the bedroom makes everything feel so fresh and I slept really really good there. You're two blocks from the Zócalo which apart from NYC is the center of all civilization. You honestly can't get a better location. Do yourself a favor and take a late night stroll around that area, it is so dreamy and peaceful, and it is safe.