I visited Gerlitzen in December 2002 and for a comparatively low-lying resort there was good snow cover. Despite this one or two runs were closed - not because of insufficient snow but due to the fact that the main opening week was the week after and they wanted to keep them fresh.
The pistes were long-ish for a small resort and well groomed. Only blues and reds were fun skiing. However, the things that most impressed me were the stunning scenery and beautiful views. It's a mountain surrounded by other lower mountains and, as such, gives you the feeling of being above everywhere else. You're also not far from other resorts and we visited Bad Kleinkirchheim and Nassfeld while we were there. You could also hop over to Slovenia (Kranska Gora is not far). All in all, a quiet and pleasant resort ideal for beginners.