I recently completed a stay at the Napa Marriott and would not ever recommend this property to anyone. Thankfully, I used points for my stay.
Unfortunately, they charged a $20/day resort fee. Not sure exactly where that money goes, as the exercise equipment in the sub-standard workout room and the mold on the ceiling of the bathroom were not clear indicators of where the additional resort fees were going.
I am a frequent traveler and this property is an embarrassment and I'm certain to share this with my friends/colleagues. I went to the Westin to join the wedding party and thought I had died and gone to heaven compared to the Marriott.