The place is very well located, if you like to walk you can easily visit a big part of the city just walking from the flat (close to termini station), otherwise there are metro station very close. The neighborhood is rather popular and lively (there is a market in the street in the morning), I personally liked it and felt safe, even though maybe not anyone would feel totally comfortable in that kind of neibourhood.
The place is a big apartment with many rooms sharing the same well-equipped kitchen. The bedroom is quiet (doesn't give on the street but on a quiet internal) . The bathroom is small but OK.
I didn't meet Mario Fernando , but somebody else who was very arranging and welcoming.
Globally it is a good option, that I would recommend.