Ski Welt is an awesome resort, truly huge- you can definitely spend several days here. There are…read morelots of different access points to the resort, we used the Scheffau parking lot- convenient enough, there were several gondolas and a ski-out for the end of the day.
Make sure you take a map, there are lots of different areas, and it can take several lifts / runs to get back to where you started from, so make sure you allow enough time before closing.
Plenty of hospitality on the mountain with bars and restaurants, at the usual ski resort prices.
My only gripe- don't go during German or Austrian holidays, the mountain can be a Zoo when full.