I have stayed 22 days in Etel's apartment and I really had a wonderful time there. The neighbourhood is calm, with some cafes, creperias and fondas one or two blocks way. There is also a nice park to do exercises. The apartment is cozy, perfect for one or two, with a nice price. It is two blocks from the blue line of the metro, which brings you to Zocalo and connect to many places in CDMX. And Etel is the nicest person ever. :)