I really like packing a maxi costume or two for any summer vacation—they’re stylish and comfortable even though also remaining light and easy to pack. I’d also bring together a light jacket or cardigan, as summer evenings in Austria (particularly when you’re from the water) might be a bit chilly. https://tedomarket.com/product/shoes-2/mens-shoes/boots-mens-shoes/snow-boots/mens-top-ankle-chelsea-boots-mens-casual-shoes-men-zip-footwears/