We used the Redmond Marriott Town Center for the guests who attended our wedding in May 2005, and were very pleased.
Their group reservations contact was in constant touch with me via email several months before the wedding to let me know who had made reservations. They distributed the gift bags I created to our guests as they checked in, and this went very smoothly.
No one reported any issues with the hotel, and many of our guests commented on how nice and new the rooms were.
The hotel restaurant (Meritage) has excellent breakfast and it was easy to get a seat, though we had a party of about 10 people.
The hotel is conveniently located in Redmond Town Center, so there's plenty of parking, shopping and places to eat within walking distance.
They handled our small group (about 10 rooms) really well.
PROS: great location, great service