-on the appartment :
The apartment is really nice and very well located.
Although, as said in the other comments is really noisy at night, even with the windows closed, there are ear plugs available, which can do the trick.
On people :
Eduardo, the guy that received me was really nice, and when I called to change my arrival time, he was very nice to come earlier.
The communication was not very clear at the begining, I was writing them in Spanish, and I got messages in english, and been asked from different people the exactly same information.
On service:
For me the only cons was that, as difference with other airbnb, the little things to make your stay easier were not available, (as shampoo, conditioner, coffee) so if you are traveling only with your hand luggage this means you need to go to the supermarket event to have a coffee.