I streamed this yesterday on a whim and really enjoyed it!
I danced ballet for many years when I was younger. I quit in high school though since I knew I wasn't good enough to be professional. I found the depiction of ballet classes/training to be very realistic. The competition between dancers to be prima is true to life. The lead character, Yulia, is certainly sympathetic, but sometimes she is a real brat.
The plot was a little confusing, but I was reading the subtitles and those can be hard to decipher: for some reason, the version I found had subtitles in yellow (?) which was hard to read against some backgrounds.