I skiied here in late July 2005. It was some of the best snow I've skied on in 20+ years. It wouldn't call it difficult terrain, suitable to both beginners and intermediates for a fun day. Nothing really for experts, but a thoroughly enjoyable experience to look up at the smoke coming out of a live volcano and look down on the valley and beautiful lake below. Everyone was friendly, and even if you don't speak Spanish (which is useful) you will find plenty of people who speak English and everyone from staff to the locals will do what they can to help as best they can.
The purpose of my trip to Chile was not to ski, so I rented skis there and found them of better quality than most of the rentals in the USA. One other thing of interest here is that there is sledding on the lower portion of the hill. The lift will take you past this, but be on the look-out for it if you ski back down to the parking at the bottom rather than taking the lift down.
The town of Pucon is a classic resort town with a variety of lodging available and many fine restaurants. The one thing to be aware of is that winter here is actually the offseason as Pucon mostly caters to Chileans who come here to enjoy the cool Lake District in their summer. Thus, not everything is open as many hours as they would be in the summer, and you may want to call ahead if you have a specific lodging that you are seeking.