I stayed at the Hotel Melia on Reconquista for a short business trip, flying in on a redeye, going to work, spending a night, working the next day and taking another redeye back to the States. The hotel was surprisingly nice. Room was spacious and relatively quiet, not the newest furnishings, but hey, it's Buenos Aires. The best part was that the air conditioner worked well. By contrast, the Sheraton nearby has a continual problem with adjusting hte A/C so that you can't get the room cool.