Good location that's walking distance to a lot of the hot spots you want to be in in Mexico City. Roma Sur itself is a nice neighborhood with a lot of restaurants and there's a big mercardo (market) right down the street. César was very responsive when I needed anything, and was a good host. The apartment is bright and sunny and overall clean. It is an older building which means that water pressure in the shower isn't great, but otherwise it was a comfortable stay and great value.