Don't forget to bring your camera to capture the spectacular cascades of The 7 Cascadas. If it's raging, you may be able to feel the mist on your face.
You're spoiled for sightseeing choice when staying in Chuquisaca. The 7 Cascadas is a great place to begin here, but there are plenty of other worthy places to check out. Plaza 25 de Mayo, Sucre Central Market, and Sucre Cathedral are close to the cascade of water and will fill in your day nicely.