The innkeeper stands for hospitality and a resting place on the road. Dream books read it as shelter for a while, and the openness to let others in.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.