It was actually a very good design for an aircraft carrier. Infighting between the Luftwaffe and the Kriegsmarine kept it from being finished.
Oh, no. It was enormously top-heavy. It had all of its anti-aircraft guns on the starboard side, too. You would not want to be on it in heavy seas or in a high speed turn (e.g. evading bombs or torpedoes).
One thing that the Germans did right with it, however, was the downward sloping runway threshold. Ski-jump styles from later aircraft carriers completely miss the aerodynamic points (you want increased speed on launch that is obtained by sloping down rather than angling up...and you want the lower, rather than higher, angle when coming in for a landing).