Casa Sanchez is great little spot in Buena Vista just off 24 with some of the best wait staff and some incredible food to match.
One of the best parts of Colorado hiking is alpine lakes. The Ptarmigan Lake Trail is a moderate hike full of wildflowers and a great lake.
The Eddyline Restaurant has style and good food when looking to eat local in Buena Vista. The wings and burgers were a great post hike meal.