The first time I went to Scheffau was March 2014. The snow wasn't great but the pisters had done a fantastic job. Having had a great holiday I went back for a weekend break in January and a family trip in March. Thankfully, the snow was much better this year!
Scheffau is perfect for skiing the SkiWelt area as it's in the middle of the ski area. If you're travelling with children then this place is great, if it's their first time I would suggest the KinderKaiserland ski school as it's located at the top of the gondola and it's easy to come back during the day to see how they are getting on. If they have been before I would recommend ski School Ingrid Salvenmoser as it seemed quieter than the others and the groups are smaller. Having skied in France lots over the last 15-20 years it was refreshing coming back to Austria, so much cheaper than France and cleaner with picture postcard alpine buildings. Everytime I have stayed at the hotel kaiser in Tirol, I love this place, kids club in the evenings, fantastic food with free drink and it has everything you could wish for in a hotel. I've already booked up to go back next January and March!!