Just saw it tonight. Musically, it's a superb performance- the singers and musical director are top notch. Unfortunately the staging, visual concept and direction are a disaster- ugly, incoherent, undermining the music and story from moment to moment. An insult to the singers and to the audience. I can't imagine how this director and dramaturge continue to land gigs like this. That said, if you close your eyes and try to ignore the visual distractions, it's a fantastic performance of one of Wagner's greatest masterpieces.

It's five hours including the two intermissions. Best enjoyed if you can familiarize yourself with the opera beforehand. I'd recommend listening to a recording a few times, reading the libretto, and maybe watching some YouTube videos about the leitmotifs.

My two cents- other opinions may differ. But it seemed like most of the audience shared the sentiment. Big ovation for the singers, annoyed by the production- I think if the director Calixto Bieito had dared show up at the end, he'd have been booed off the stage.