Is there a motel there

There is a couple

Yes, as you enter the property on the right. Hyatt Place. There are also hotels in the surrounding area as you are near Portland International Airport.

Not in the shopping center but close by

They do have a few good star rated hotels around the outter area. Holiday inn, Marriott, Etc. Lots to choose from the further in town you go. All fair prices book early. Ask about discounts