I gave Carlos a perfect score for 4 reasons.
1. He was fantastic at communicating and was really patient with my slow responses sure to lack of internet and my flight changes that changed my arrival time. He was very informative and available always.
2. The apartment's view is spectacular. Felt privileged to be able to see the obelisk at all times.
3. The location of the apartment is fantastic. There is multiple subway lines and buses nearby.
4. The apartment delivered everything I wanted. It was clean, had laundry available, hot water, heat and great internet. I've been traveling through South America and you cannot always find those things.
The apartment and the building are a bit outdated and perhaps not the most stylish, but the place is really all suited for budget travelers who want nice amenities.
I would 100% return this location.