Tao Dan Park is a large, green and beautiful oasis situated in the city. With more than 1000 trees, it should give you relaxation and time away from the concrete jungle.
The language barrier need not be an issue because you can participate in simple games with the locals or challenge someone to a chess game and even some badminton. This is by far, one of the most efficient places to eat and relax.
While at the park, you can get a glimpse of authentic local life as well as common daily activities. Aside from your coffee and breakfast, everything else in this park is completely free.