We have just returned from Mendoza. Thanks to this board we had a very good trip. I can second the recommendation on Argentio Hotel for its location and friendly staff. It is a simple hotel with the right price. We were traveling with our sons. The location is perfect for teenagers and twenty-something.

Vines of Mendoza is a wonderful establishment. Although they no longer books tours, they provided provided recommendations for tour companies and Remis drivers. Our driver is very fluent in English. Somewhat knowledgeable about wine has sufficient contact with wineries to fill a couple of gaps we had in our schedule. He drives a mini van and charged US$115 each day vs wine tour companies charges over US$200 for private tours. If you want group tours, they are very reasonably priced. One price I heard was ~US$100 or 125 for 4 wineries and lunch.

Anyone would like my drivers email address, please let me know.