A tiny cafe near Beimen station just across from the Beimen North Gate landmark, and just next door to another popular cafe called MKCR. The inside space only has counter seats along the windows, perfect for getting fresh air on a nice day. There are also a couple of seats outside. The menu is quite big, with coffee, tea, and desserts. Unfortunately there are no restrooms, so I guess this is really only suitable for a short stay.
Minimum order 1 drink, and there is a two hour limit on weekends.