What is your work life balance?
Work life balance is very dependent on your own working patterns, as well as your supervisor. For the training year, classes run from 9-5 and there is never homework assigned over the weekend, therefore the work-life balance is well built in. Once you start your research however, it will be based on how/when you want to work. This is one of the benefits of a PhD is that you get to set your own working hours and can maintain the work/life balance you want to achieve.