Quoting Tara Tara from dramacool…. I liked the way she phrased the comments:
“First of all, thanks to Jin Soo Wan for writing such a wonderful script, thanks to the director who masterfully realized it, thanks to the actors who made these characters so real that we cried and laughed along with them. This series had everything a quality series should have. There was laughter, and tears, and anger and compassion, and little life lessons that we all learned once but this hectic and chaotic life made us forget them somewhere along the way. I know we were all hoping that Yi Chan would be able to hear but this was actually the last in a series of lessons that this series has taught us. Running away from reality is not the solution to the problems we face, tackling the problems is the only way. We should use what we have been given in the best possible way, that is, use our disadvantages as a driving force. Exactly what Yi Chan did.”

Every episode made me laugh and cry… music was excellent… acting was great… pace was really good.
Overall.. yes, all the hype is absolutely true… it is a great story…