Zen Den Coffee House is a cafe in the lobby of Lohas Residences Sukhumvit Hotel on Sukhumvit 2 in Khlong Toei, Bangkok, serving coffee and bread. It offers a vanilla latte, yuja coffee, and strawberry yuja coffee. The croissant is warmed and baked to order, so it comes out crisp. Because it sits deep in the alley, it is hard to find the first time.