I think there are different ways for prose to be beautiful, and I appreciate many of them. There's beauty in clean, sharply drawn characters and prose that speak to the everyday/everyman as well as prose that holds poetry within the text. In my mind it's like music; I love blues and jazz, classic rock, a beautifully played violin will move me to tears, but I also love and see the beauty within punk. Regardless of genre, I would never think ugh, I hate the way that riff calls attention to itself, the song would work and the pace would be faster with it. Does that make sense?
IMO very few novels and novelists have it all--beautiful prose, riveting characters, and fantastic storyline. If the prose has that aforementioned lyrical quality, I can not only forgive but not notice plot holes until I've finished the book--and still not care.