Rav Moshe Feinstein says that Hashem davka wanted Yakov to sleep in that sacred spot! For what Yakov "did not know," & what G-d wanted very much to teach him – and us! - was that every activity we perform in life can be a holy act, if only we have the right outlook.
What is the secret of Yakov’s ability to survive all the ups and downs? How does he maintain his strength and his faith - by remembering his dream, and the fact that the angels are always there with him!