If you like the sound of the large, undemanding SkiWelt circuit, Ellmau has a lot to recommend it as your base, especially for those starting out skiing.
Like many Austrian resorts, the village itself is traditional and relaxed, well suited to families. It's an affordable base with plenty of off-snow activities, including the KaiserBad leisure centre.
Ellmau sits at the north-eastern corner of the big SkiWelt ski area, giving access to 280km of pistes with a fantastic snow record at higher altitudes despite the village itself sitting at a rather low altitude. Expect many scenic tree lined runs, offering great shelter when the weather turns. You can also progress (via Brixen) to the slopes of Kitzbühel; these and various other ski areas within reach are covered by the Kitzbüheler Alpen AllStarCard ski pass.