I spent a month at Laura's place in Recoleta. It was extremely safe, conveniently located within less than 5 minutes walking distance to the subte (metro station) and 10 minutes walking to the recoleta cemetery, museo nacional de bella artes and many other locations. Laura is a great host, very approachable and extremely helpful. will definitely stay there when I visit Buenos aires again. the apartment itself is huge, very clean and very well maintained. the apartment complex has a 24 hour doorman who is always available as well if needed.