I was looking for a cheap overnight near the lighthouses in South Portland. The Knights Inn was inexpensive, and had the amenities I wanted: Refrigerator, microwave oven, bed, and television. (Not sure if it has wireless, since I did not bring my laptop on this trip). IMHO, this is a step above the Rodeway Inn down the street, which is comparable but does not have a microwave oven in the room.
I had a good night's sleep and no complaints.
However, if you're looking for luxury or fancy amenities, this is probably not the place for you.