When is the checkout? I'm going there in a week from Canada, and have an 8pm flight, so I'll either need to stay at the hotel or wait somewhere for a while.

It's a morning checkout, but you can leave you bag with the front desk and go do other fun things in the neighborhood until time to head back to the airport.

I found the staff very accommodating I'm sure they can work something out for you

Yes, it is am checkout. It is a great neighborhood and there is public transportation virtually in front of the inn. You can easily get practically anywhere in Portland.