A meditation hall is read as stillness made into a room. Sitting there in a dream points to a need for silence and focus; being restless there, to a mind that will not yet settle.
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.