There is a kitchen on the top floor that is open most of the day with a varied menu featuring excellent vegetarian and non vegetarian options. I was happy with everything we ate there, and on certain nights they do a special dinner at their sister hostel a few doors down. We tried the Mexican night and it was actually pretty good, the tortilla chips were delicious. At night they have various happy hours, the one we opted for most often was a special of two large beers for five dollars. We figured out that they lure you in with the free one, and you end up staying for more. There are three beers offered on tap: an amber, a stout and a blonde. My favorite was the blonde for sure, but we each preferred our own style.
I saw that they have a multitude of different activities that they offer for an extra price, but the only one we participated in was a tour of their beer facilities, which includes a barbecue, shirts and all you can drink beer. We had a blast learning about the company and how they make their beer, and the included booze didn't hurt either. The afternoon included a couple of games of soccer, and a spill I took diving for the ball has left my elbow still sore to this day! It was a nice diversion on a Friday afternoon and was a fun way to meet some other travelers.
Overall our experience at the hostel was positive, there were a few annoyances, such as the water in the showers never getting quite hot enough. Or the fact that if you want to pay with a credit card you end up getting charged more, however my feelings are overwhelming positive about our stays with them. They are clean, organized and generally on top of the ball, something that I am learning to appreciate more and more as we continue our travels.
I'm sure you could find an even less expensive place to stay while in La Paz, but the security, comfort and free beer definitely won us over.