First of all, Silvina is a very nice host and is trying to solve everything as quickly as possible. In general the apartment is very clean and well equipped. Be aware of the fact that in 2 of the 3 bedrooms there aren't any windows for fresh air and there are not 2 bathrooms as stated in the ad. There is 1 bathroom and 1 extra toilet.
But we also had some problems. Some small things that where fixed quickly are not really worth mentioning, but the problems with the construction are severe. Not only was the elevator not working for 3 days instead of the 1 day that was told to us, but the noise of the construction workers was not holiday like. We woke up every morning early when they started working because of the noise.
Also on the second day the bathroom flooded because the drain was not clean. My dad cleaned it out because otherwise there would have been water damage but it was disgusting. These are probably rare situations but unfortunately we were dissapointed.