A local company "Andean Kingdom" (http://www.andeankingdom.com/) organizes a daily bus trips to and from the crag from Huaraz costing 25 Sols (10 USD) for each way for each person.
There is a modern hut with full kitchen and hot water located a 5min walk from the crag for 30 Sols (12USD) per night. You need to bring your own food, however beer is available at the hut.
Did you know that you can create an account to record, track and share your climbing ascents? Thousands of climbers are already doing this.
Check out what is happening in La Heladeria.