Oregon's drinking age is 21. Walk, don't run, in public areas. Our policy on room occupancy is that only guests that are register with the hotel may be sleeping in the rooms. Room stuffing is frowned upon, so don't post notices advertising crash space. It has lots of interesting stuff, including a sushi bar.
Taxis are spendy, but easily available.
If you are renting a car, take 205 South, take the Columbia Blvd. West to I-5 North, and follow the By Car directions. The Columbia River is the Red Lion with the red roof, WEST of the freeway and across the road from the shopping center. Taxis are always available, too.