I really, really, really love this show. Keanu is of course a bonus here and you can take that as a good sign that this is worth your time.
I was a little undecided on Axel at first but found myself really warming to him. Stormare just does Stormare and it's perfect. Vivian Bang is hot and hilarious.
I highly recommend you give this show a chance. Season 2 is an improvement on season 1 and I sincerely hope they get to continue to make this show despite the fact it has largely flown under the popular TV radar, like many shows such as Last Man On Earth, Vice Principals and I'm Dying Up Here.