Posada Cavieres was fantastic. Hans, the owner, was a great host who even went so far as to give us a ride into Mendoza to pick up our rental car. The area around the hotel provides easy access via bike, foot, or car to six different boutique wineries all offering affordable tastings and, in most cases, great food. My only recommendation would be to stock up on cash ahead of time, as the nearest ATM is in Maipu. Also, the WiFi can be a bit spotty, so plan accordingly.