I thought it was pretty good and worth watching. Of course not everything is true. However, if you look it up, the real couple never moved in and took a loss of like $400,000 when they sold it. And to date, they still haven’t found out who was sending the letters. They have DNA and tested a few people through the years but no one was a match.
I understand some people were disappointed. However, you don’t need to analyze it where you’re criticizing each character/actor. It seems they watched the whole series. If it was that bad, why continue to watch it. It kept my interest and I thought it was very entertaining. I didn’t think there was any need for such criticism. I’ve seen a lot worse.