I did my training in AMS 4 or 5 years ago and I'm now with a different company at LGW. I also did most of my 6 month checks in EMA while I was an FR pilot.
Having experienced all three locations, I can tell you that living costs will be much lower in EMA than the other two. Therefore that is the one I personally would go for.
All three locations will have current Ryanair pilots conducting type rating training. Trust me, you won't have that much time to explore the sights of any of the three locations while you are doing the type rating. Crawley(just outside LGW) really is a must if you do get time however.