I just finished a 3 day stay at the Courtyard by Marriott in Pleasanton. The hotel is located close to several major companies (Oracle, Safeway, Kaiser to name a few). I stayed on the second floor on the outside. I didn't have any problems with noise unlike some travelers have reported. We were in room 269 which was far from the elevators.
The facility was clean and pleasant. Breakfast was included as part of the corporate rate. The breakfasts were very good. Fresh fruits, yogurt parfaits, breakfast sandwiches, etc. It was a great way to start off the day.
The fitness facility was a little small for the size of the hotel. There are 3 treadmills and one elliptical machine and a weight bench. The mornings can be busy when business travelers are trying to squeeze in a workout before they start their day.
There was a slight mixup with our hotel room but I think it might have been the fault of the travel agency, not the hotel. The hotel didn't go out of its way initially to fix the problem but we did come to an amicable solution.
I saw some complaints from other reviewers regarding the mattresses. I slept on the hide-a-bed with some extra pillows and didn't have any problems at all. My friend slept in the king bed and didn't have any complaints, though I thought the mattress seemed rather thin. From the GM's previous comments, they are replacing the mattresses this year.