For some background on Sri Ramakrishna, see this post.

You should remember that the heart of the devotee is the abode of God. He dwells, no doubt, in all beings, but he especially manifests himself in the heart of His devotee. A landlord may at one time or another visit all parts of his estate, but people say he is generally to be found in a particular drawing room. The heart of the devotee is God’s drawing room.

Translation by Swami Nikhilananda