Bear in mind, that whilst you can ask them to add no chillies, this restaurant serves a lot of spicy food. The hotness of a dish is indicated on their menu. Furthermore, you can eat in and take out. On your arrival to Zen, you will see they do have an outdoor eating area decorated with plants and soft furnishings. The heaters are on at night, blankets can be brought over if you find yourself a little chilly. In addition, there is a Buddha statue through the window.
Also, the interior is decorated in blacks and red colours, with fake plants. Furthermore, in the middle of the seating area, there is a fake cherry tree with its branches unfurling themselves across the ceiling. In addition, tables and chairs are a layered wood. Smooth to touch. Moreso, the bar is straight on from the doorway. Also, the bar is decorated with red lighting. Reminiscent of the red lighting you may find on the shops of a street in Bangkok.