Always depends on taste in reading, of course.
I love romance, but only with a sense of humour, and if it's period romance (let alone claiming to be historical), I need to feel the author has a real knowledge and understanding of that period.
If you share such interests, then definitely and absolutely try Georgette Heyer. I find her wit far more strong and accessible than Jane Austen, and while she uses stock characters, she then plays with these: a villain in one will be the hero in another.
Heyer is famous for Regency settings, but was also a scholar of medieval times and has written for that period too.
Whenever I have a gap between new books, whenever I want a good nostalgic read, whenever I need cheering up, I re-read my Heyers.