Another good source, if you want a necessarily subjective, but I think sincere inside view, is the tell-it-all by famed former Greek finance minister Yanis Varo

Another good source, if you want a necessarily subjective, but I think sincere inside view, is the tell-it-all by famed former Greek finance minister Yanis Varoufakis Adults in the Room: My Battle With Europe’s Deep Establishment. It's a bit technical occasionally, but really riveting and full of drama (unfortunately not fictional).