Fablous! Our trip to Mexico City was spectacular, and in no small part due to Marco and his wonderful apartment. The apartment is as described on the site. It's well appointed and very centrally located. We walked all around the neighborhood to the local restaurants and attractions. It was an easy walk either to Chapultapec Park or to the central district (note that we're big walkers though. Others may wish to cab). The metro was only 2 blocks away, and is convenient and cheap.
Marco arranged airport transfers for us and also helped to arrange a trip to Teotihuacan. He was super helpful with information and advice and checked on us frequently to see if he could help in any way.
I would recommend Marco and his apartment to anyone!