Mahlzeit!
And yes I can confirm Michael's statement that Mendoza is indeed great! It has a very cool downtown with a little bit of a Mediterranean flair and also there are lots of vineyards with excellent wines around the city. My favorite is the Zuccardi winery. Also it is very close to Santiago, Viña and Valparaiso - in case you are interested in getting to know a little bit of Chile as well.
Would be more that happy to give you a little tour of the city and to hang out (and chat a little bit in German).
Cheers,
Oliver