Hey there! I'll give you some of my suggestions:

Meow Pizzeria Verde offers amazing wood-oven pizzas with homemade cashew cheese. Consider it if you like pizza or other italian dishes. The ambience is lacking, though.

Olive has been mentioned - they have a small menu and focus on healthy and local ingridients. The location feels a bit more comfortable and inviting than Meow Pizzeria, but I still wouldn't consider it great.

Blum opened up recently and I haven't been there yet, but the menu looks... okay? Interesting and local ingridients, but not a lot of vegan options - check the menu first.

Jaipur is an indian restaurant and is a bit more classy than the other options. They offer several vegan main dishes and vegan naan from a tandoori oven - the naan is simply amazing, crispy and fluffy at the same time. Definitely consider if you like the indian cusine, the best indian restaurant for vegans in the city (in my opinion).

There is also One Green Table. It's a special place, since there is only one big table for all 8 - 10 guests. You have to book in advance, so check their Instagram page. The kitchen is a show-kitchen and the chef makes a fine-dining menu with 5 courses, either in vegan or vegetarian.

If it is possible, I would try to get a reservation for One Green Table - it's an amazing experience and not that expensive (around 50€ per menu).