This season, I wouldn't risk it. There isn't a big enough snow base to handle the degradation from the increasing temperatures. Especially somewhere as sunny as Pamporovo.
Yes Trish, March is a good month, mainly because there are less people there - all the locals say it's by far the best time to go - there is a risk in going late in March although this season has come late so it could mean brilliant news for those going out then.........
Quite true Mat. Karen Pamporovo is nor,ally closed by the end of March, you need to look at Borovets or Bansko and even then at that time I would leave it a little longer before booking.