On my commute, I took a slight detour and picked the route that would pass by this Starbucks. It is a little difficult to locate when traveling west on University Ave as others have mentioned. It's definitely easier to access this place going east to downtown Madison, to enter and exit through the drive through lane.
Since I was entering from the east side going west, I had to get creative and turn left and then right into the back of the Starbucks. From there, the drive through line was fairly long, so I looped around the small parking lot, pulled into a Handicap space and then backed out into the back of the drive through line.
From there, I ordered a Venti Strawberry Açaí Refresher and a Blueberry Oatmeal. I forgot to ask for light ice for the refresher but I'm still slowly drinking it so it was made fairly well. Similarly, the oatmeal also had a good amount of water. Keep in mind that this place offers fresh blueberries (although I personally do enjoy the dried blueberries a little more.)
Overall my food and drink was made well and I enjoyed it! Although the parking and driving situation could be made more ideal, it's still in a good location and the drive through is more convenient than not. Definitely worth checking out if you're around the area.