We stayed for 5 days in the lovely penthouse of Juan and Romina. The location is very central in town and easy to explore all the barrios of Buenos Aires. Metro station is 3 minutes walking, restaurants and shops close by and very quiet in the evening.
The apartment contains everything you need. And it it very safe and clean. The doormen is friendly.
Juan and Romina will help you with the information you need and even gave very good tips about BA, restaurants ect.