Guillermo's place was perfect. It was located right next to the smaller airport (a less than 10 minute walk) - so book your domestic flights out from there and save the 25$ cab ride to BZE international airport. He is also just a 10 minute walk to local restaurants and a park area with ice cream and other food. It was a very nice stay.
Breakfast was delicious and filling. He was very helpful in answering our questions and, when we missed our flight he told us what we could do (and we ended up saving a few bucks!).
Thanks again for the hospitality Guillermo!