No that is not a typo, it was spelled with one “N”. I have no idea if this was just a coincidence with the hotel chain or if there is more to the story. This later became the Brook Manor Pub, a second location for the North Attleborough Brook Manor.
I grew up literally across Route 1A from this (photo is of the Route 1 side). They were known for their Prime Rib and it was hard to live so close and smell the deliciousness when the wind was from the west.