I like Tom Ellis and Lauren German in general and they're essentially what have made the first three episodes watchable (haven't seen the fourth yet). The pilot felt much more tightly written/plotted than the second and third episodes. I like both actors' interactions with the daughter of German's character as well.
Definitely not a great show. Not terrible either. Out of all the current DC shows, I don't like it as much as Gotham or iZombie (neither of which I even love, I just liked them enough to make it through the first season of each from beginning to end... but haven't bothered to watch any of their second seasons yet). I do prefer it to everything in the CW/CBS universe, though. That's not saying much, however, as I strongly dislike those shows.