Flora et Labora is a beautiful café and flower shop by Naviglio Pavese in Milan. Here you can purchase beautiful plants as well as enjoy some delicious coffee and vegan sweets.
I recommend coming here in the morning if you want to try some of their cakes or muffins. In the afternoon, especially on a weekend, there won't be much left.
Here, they also allow you to work or study, but there's a small fee to pay for this.
A nice thing they do, which is not common in Italy, is that they have free natural or sparkling water.