PDX
The intl gate is just a short stroll from the very nice WC. Security wait is rarely a prob at PDX, and if you have any status at all, you can use the Elite security line.
Customs and Immigration from NW 6 are cake, as it's the only intl flight into PDX at that time. I landed from NRT yesterday morning, cleared C & I, hopped the train into town and walked into my apartment exactly one hour after touchdown.
The Embassy should be fine, but I've heard good things about the new Aloft hotel by Starwood.
My friend Pete points out that it is really cheap to take the MAX from the airport, and there are lots of great hotels downtown within a 5-10 block radius from the airport line. If you're just overnighting here, check out the discount websites for some deals at a Kimpton hotel or the other boutique hotels in the area.