I love a sweet holiday romance and "Heart Note" fits the bill. Lily is adorable and Christos is sexy as all get out. Sparks start flying from the minute they meet, and I honestly liked them both. It was light-hearted and fun. Their romance is believable, and their are a couple of steamy-ish parts, but nothing to make you blush. They are just a good couple.
The other ladies who work at the perfume counter are enjoyable too. One's very Parisian and the other is a bit of a gossip, but I can see why they are all friends.
The mystery aspect of the plot was a bit lacking, but that's not really the focus anyway. The bad guy gets caught, Christos has to save Lily from a moderate amount of trouble, but it definitely doesn't overshadow the romance.
The story takes place at Christmas in Australia, which makes it a bit different for me. It's summer there this time of year, so...