All-around great spot for Italian in Rosslyn! Sfoglina has a super lively atmosphere, friendly service, and a solid variety of delicious food. I've visited a few times, and each time have been super impressed by how welcoming and accommodating of dietary restrictions the staff has been -- Italian places are generally tough for folks who are gluten-free, but they have a number of gluten-free items (or substitutions), and the servers are diligent about checking with the kitchen to confirm the ingredients.
My latest (and favorite) visit was for Summer Restaurant Week in 2023; the meal came with three courses, starting with a delicious and refreshing salad, and ending with an equally delicious and refreshing sorbet for dessert. My entree of choice was their olive oil poached Icelandic cod, which was perfectly flaky and tender. The capers and squid ink made the dish quite the umami flavor bomb, and I would absolutely visit again just to indulge in their cod again.
The king of their menu is, of course, their giant selection of pasta. If you're feeling indecisive, you can get a pasta flight to share with your table and sample three plates (which is honestly just a tiny fraction of their menu, but still a delicious fraction). They don't explicitly call this out on their menu, but you can also order a half portion of any of their pastas, which is great if you're not feeling super hungry or if you want to try out two different entrees.
All in all, Sfoglina is a vibrant restaurant with lovely service and fantastic food -- highly recommend for your next Italian craving!