Those hotels are not your choice! Try this, when your parents get off the train, ask those travel agents in the train station. Those travel agents have maps. Ask your parents to pick up one close to the US Embassy. Ask your parents to compare location and price before go to the 旅馆! Have a look of the 旅馆 first before make any decision. Again, it's OK to pick up 旅馆 after your parents arrive in Beijing. Just compare the price, and have a look first before make decision. It should be OK!
Best wishes!