I don't find the bread itself super sweet but the custard inside is like a thick, sweet pudding almost. That makes it all sweet tasting. The glaze adds sweetness, too. If you're wondering if this is more a bread to accompany a meal then I would say no. It's more a dessert bread, IMO.
And might I add, it is amazing! I love, love, love this! I introduced my mother to many of my favorite snacks and sweets on our trip in Jan. and she said this bread was her favorite thing from the entire trip. It always is for me, too!