I paused watching the drama after three episodes, because the ML's haughtiness had driven me crazy. However, when I started watching it again, my resolve has melted, and enjoyed the story till the end. ML still remained all serious even when joking (I liked more SML's cheeky smile), but to be honest, it did fit his role as the Crown Prince. FL was absolutely gorgeous, I couldn't find any fault in her acting. Even though SML was oozing with charm, I didn't feel any SLS, because it was obvious from the start his priorities were elsewhere. Supporting cast was amazing, from the villain and the king (the all-present Jo Han Chul, he was in everything I watched so far!) to hilarious FL fellow villagers. The story wasn't complicated and inundated with heavy historical plot, the villains weren't overtly devious, and episodes were all equally strong, not dragging at all.
I recommend watching this if you are looking for something sweet and fun to entertain yourself with.