I think that if your son is in ski school or with an instructor he will be fine with Borovets-last year as we all know was fab snow and it was the best sking in the 23 years I have skied in Borovets but of course no one can predict snow conditions-the last 2 years have been good at half term-but I have had really bad conditions which is not pleasant-on the Rila side of the resort there is an easy run from top to bottom with some reasonable reds to progress to-access to these is from 2 chair ...
I think that if your son is in ski school or with an instructor he will be fine with Borovets-last year as we all know was fab snow and it was the best sking in the 23 years I have skied in Borovets but of course no one can predict snow conditions-the last 2 years have been good at half term-but I have had really bad conditions which is not pleasant-on the Rila side of the resort there is an easy run from top to bottom with some reasonable reds to progress to-access to these is from 2 chair lifts in front of the Rila hotel.On the Musala side (access by gondola or a taxi ride to a 4 man chair)the fairly new Musala path is great fun for beginners or intermediates at the end of the day-a pictureque peaceful run through the trees.The red Yastrabets are also ok-my grandson at 5(with private instructor) managed the Yastrabets runs and I found them fairly easy having skied in the Alps for a few years and coming back to them.It all depends on your budget-while my grandchildren were under 11 I made good use of the Crystal children free offer I think you need 2 paying adults-and we went to Courchevel and la Tania where the snow was to die for but at half term it would have been beyond my budget-we went the first week in january-but as I said before with change of schools I am going the week before Xmas to Meribel-and h.t. to Borevets. The 4 hours instruction in Borovets is a real bonus as not only do you progress you also have fun with the rest of the group-most of my ski tuition was in Borovets and it really paid off as I am still sking-so must have got something right! at 70.Good luck-
We did Borovets for the day from Bansko last year, I usually ski the blues in Bansko but managed all the reds in Boro. Enjoyed it so much we are having a week in each this year. Your son will love it