Dan’s place was in a perfectly central location close to most of the tourist sites like the Royal Botanical Gardens, El Prado, El Matadero, etc. (all walkable within 0.5-1.5 miles). It was also very close to the Embajadores train station which made for a particularly easy way to get around/ travel to the apartment from the airport. There was an abundance of great food around, including some restaurants on the same street. I felt safe walking to and from this location and felt comfortable staying there. Like other reviews mention, this apartment does open directly onto the street, so keep in mind you will hear people walking by (at all hours, many people are still very active past 12am/ 24:00).
My only comment is that I was scalded by the shower when I first used it. There is no control on the heat temperature and the water gets boiling hot without warning. Do not touch the mental rod connected the shower piping— it will burn you when the water is hot. If you take too long in the shower, the water will get cold. (These were things I simply had to adjust to, probably because I was not used to this type of equipment.)
All said, I had an amazing stay and would love to stay here again in the future.