It was not beach weather according to me but 28 degrees was perfect for us and what we had on the agenda. If you want to swim and dive I would recommand to visit Hoi An in February and March.
A wonderful thing - in all major "streets" in Hoi An, there are speakers up on every second house and are playing classical music. So you walk around town and have Mozart and Bach as a background music. Amazing!
Many many tailor shops with most beautiful fabrics...
The cutest small romantic restaurants next to the river...
The old Japanese bridge
Nice small galleries with local artist