Review of Flippin' Burgers Observatoriegatan – by Sanna L. Share Report Sanna L. Talent Flippin' Burgers Observatoriegatan 26 May 2015 This text has been translated automatically. Show original » Still have not found a better tasting Burger! ... and Yes, I have been searching;) A bit awkward that you can't book, and sometimes have to queue up excessively long, but it's worth it.