Szimply is a teeny-tiny breakfast-all-day restaurant in the cobble-stoned courtyard of a pre-war downtown building. Partly thanks to a New York Times article that also featured Szimply (Budapest is #50), it's next to impossible to find an open table at this closet-sized breakfast nook.
The short menu is a collection of on-trend international breakfast staples, most of which are expertly prepared (and pricey). Naturally, there's avocado toast (€12), strewn with chickpeas, beets, pickled onions, and ruccola. It's very good. The vegetable-forward menu changes seasonally, but it's usually heavy on vegan and gluten-free options. Note that in the name of good health, Szimply doesn't serve alcohol.
The crowd, as you may have already guessed, is chic and international. If you order coffee, it will arrive from Kontakt, a specialty coffee shop next door to Szimply and run by the same owners (with a strict "no americano" and "no sugar" policy).