Maria's place is in a lovely area of Buenos Aires, close to nightlife, the best pizza I've ever eaten (do yourself a favour and order Aquelina at San Paolo's pizzeria), and public transport.
Maria was a great host and is well versed in Argentinian politics and tango, which provided me with a richer background on the city than I could've possibly found out by myself during my too-short stay.
Maria was also great at giving me tips on how to best make use of my short time there, which was invaluable.
Thank you Maria for being a great host!