Ode to Joy & Yorckscher Marsch are only things I dislike made by Beethoven. (negative real life connections)
Best pieces of Beethoven (imho): Sonata No.21 in C Major, "Waldstein" (Pletnev), Sonata No.32 in C Minor (Pogorelich) & Sonata No.29 in B-flat Major, "Hammerklavier" (Levit).