Claudia....it's not a "dive"....we had a very nice room....like I said, we only slept there for one night for $90, with breakfast.
We then moved to the Alvear Palace for one night, as part of our pre-cruise package with Seabourn before a two day "gig" to Iguazu Falls. The Alvear was very classy, but, I wasn't about to pay $450 for the extra night they quoted me, again only to sleep there.
Also, the Park Chateau Kempinski is right in the center of the Rigoletto area!