Hi Nelly,
we went to Obergurgl this March and really enjoyed it. We are both intermediates and found the resort great for confidence building as the runs are all fairly wide reds with some steeper blacks, but all achievable due to runs being wide. Some fantastic views over into Italian Dolomites and down to the village. A visit to the Nederhutte is a must (just search youtube for some videos of the fun!

The better runs are in Hochgurgl which is easily reached by the Top Express or by bus. Mainly chairs with only a a couple of drags at the far end of hochgurgl, which is worth a visit as not many folk use the drags. Lots of easy off-piste near the runs to build confidence in the fluffy stuff which we found great fun

. Some great wee runs through the trees lower down in Obergurgl(again Youtube
http://www.youtube.com/watch?v=NX4btsI3OLM "obergiggle" to see some fun!) Lifts were all quiet with no queues.
There is a Ski Club rep in resort who we skied with most days and was excellent taking us to areas we may not have visited ourselves. One downside is due to altitude it can be windy but we had a fantastic week where it snowed at night and was sunny during the day. Quite a quiet resort at night but you can find entertainment in the resort bars.
Night skiing available twice a week as well as a firework display and instructor ski show on the Tuesday.
Resort looked good for borders although there were not many about (perhaps due to age profile there)and there are no half-pipes etc.
Lift pass can be extended to the Glacier resort of Solden (think this is where the World up starts each year) for a day which is a short bus trip down the valley.
Certainly think there is plenty skiing to do for a week unless you are a true piste basher who doesn't want to ski a run twice.
We came back and booked again for March 2010 !
We went with TO and stayed in the Lohman which is a modern hotel a short walk to the main gondola. Mainly Austrian and Germans staying at this hotel with only one English speaking couple apart from ourselves. Accommodation and food was good and very helpful staff (as much beer and wine with evening meal included in the half board). Hotels in resort do seem a bit more expensive than other Austrian resorts although there is some chalet accommodation where some folk were staying who had made their own way there. (don't know any detail)
Hope this helps a bit.