Cant really give a proper score or review to this. Since the real life passing of Hana Kimura is the direct cause of the cancellation, i've had mixed feelings on the show.
Had the tragedy not have occurred, i supposed this would have been a slightly below average season of Terrace House, so a 7/10? But due to the circumstances, i think its best not to dwell on the show's quality, but rather the treatment of the cast members.
Moving forward, IF Terrace House ever comes back (or is imitated), i hope the producers wont make the same grave mistakes, and not manipulate cast members for "entertainment".