Final answer:
Dicey was let down by Aunt Cilla's house because it was 4)small and far from the water, conflicting with her adventurous spirit.
Step-by-step explanation:
Dicey was disappointed when they got to Aunt Cilla's house because 4)it was small and not close to the water.
The anticipation of a house by the water was linked to the sense of freedom and adventure that proximity to the water often represents.
Hence, finding the house small and distant from the water was a letdown, contrasting with the expectations they might have had.