We have no experience with Vesta, as we prefer cPanel and Plesk only so hard to say whether it’s good or bad. For other free control panel options you better check the following two threads. You will find many options.
Based on beginning of this yrs (2014) update and some issues raised... I would better say, try it but not for any serious project...
I tried it out, i managed to get it set up and get a wordpress site running and emails and such but it seemed to lack some features with the interface. Im installing zPanel now, giving that a go