Sanditon was fabulous. It had a beautiful (and very Austen-like) romance, funny (also very Austen-like) characters, lovely scenery, interesting storylines for all characters and the drama we all know and love from the mind of Andrew Davies. I'll keep this short and sweet, and end by saying saying watch Sanditon, you won't regret it!
P.s. I'm very much looking forward to the announcement of series 2.