Pizza Lucé is a restaurant which serves food until 2am! They also have happy hours every day 3pm-6pm and 10pm-2am. They have both vegan options and items which can be made vegan upon request. It isn't the standard restaurant alternatives - there are vegan nuggets, mock chicken and duck sandwiches, and four vegan pizza options! Plus, much more, including pasta, salads and desserts.
(can vary during public holidays)