Oishii Street Kitchen is one of the best restaurants in the city.
I've dined in the restaurant and had takeaway, and the food is incredible either way. The staff at the restaurant are lovely, and the atmosphere is brilliant. I've had quite a few different burgers from this restaurant, and each one has consistently been brilliant. I've had both the meat burgers and the vegan burgers, and they both hold up.
They have good dietary options (vegan, gluten free) with allergens clearly listed on their online menu.
I couldn't recommend this restaurant more, and I tell pretty much anyone who will listen that they have to try this place out.