It's easy to get here from Tokyo by train and shuttle bus, super convenient! I recommend adding it to the first or last day of your Narita trip—perfect for stocking up!
You can walk from Yamashita Park all the way to the Red Brick Warehouse. These warehouses are pre-WWII relics, and they look beautiful when they're lit up at night—perfect for taking photos.
This is a great spot for a family shopping trip on the weekend. There are plenty of play areas for little kids. The only downside is that it's a bit far from downtown Matsuyama.