5 friends stayed here in January 2013. I was kind of expecting something to go wrong as we paid half the price of what we did going to France the year before, but from flights, to the skiing, everything went so smoothly and I was very impressed.
The apartment is THE BEST location you could ask for in terms of being 5 minutes to the gondala. You wouldn't want to be at the bottom of the hill. It was facilitated well, hairdryer, washing machine, broadband, telly, log burner, you couldn't really ask for much more.
The skiing was just what we needed, not being pro's. Enough for what we wanted for sure.
I would 100% recommend this apartment, the owners are very informative and can give you good advice on Transfers from Sofia, and rates for hiring equipment.