My view:
Greek CAA are one of the worst in customer service and license issue. I have heard of people waiting many months for license issue.
Greek ATC are not as compliant as UK ATC. This will cause you problems once you arrive back in the UK to fly.
PPL exams must all be taken at once. Thats all 7, now that is really bad.
The school has had problems with the JAR groundschool. Students have had to study themselves through distance learning even though they have paid for a residential course.
Even if all of these issues have been resolved which I seriously doubt , would you really want to pay a FTO who have no idea how to resolve basic operational issues?
It's your hard earned money, for a few extra hundred I would advise to train within the UK at a local school. You will atleast experience the least operational standards which Egnatia cannot provide.
G-XO