Nothing here is really great. The casting, mediocre. The music, mediocre. The storyline, mediocre. The shots, actually, the shots are really great, Ibiza is an amazing place. Also, the Spanish guy who played Boxer is also really good. My opinion is, it's worthy watching for theses two things.
The beginning is not so good, it does not seems to be so interesting. But when you hit ep 4, everything starts to run. How they tell the story is a bit messy. It hits a point where you don't really care what happened to Axel. A lot of things comes before. The interesting part of the story is how the characters are changing from what they were when they were young, for they are becoming now, grown up. It is the kind of story that is not really great but you watch it until the end.
So, if you don't have nothing better to watch, you can give it a try, but don't expect too much from the script.