I stayed at the St. Julien last week while visiting Boulder on business. I enjoyed every minute of my stay and only wish I had more time to relax there and take advantage of the amenities. The hotel is located right in the middle of town surrounded by a number of restaurants, bars, coffee shops and stores. The rooms are beautifully furnished, the bed incredibly comfortable and the bathrooms amazingly large. The product in the bathroomsis from the St. Julien spa - it was so great I took mine home with me. Some other reviewers had mentioned that their rooms faced Walnut street and were loud at night - ,my room also faced the street and I did not have a problem with noise.
The workout room is sufficient - TVs on each treadmill, and views of the mountains. Right next to the workout room was a gorgeous pool and hot tub (also with great views) but I didn't have time to enjoy them.
While I didn't order in, my colleagues said the room service food was incredibly good. There is also a nice lounge area in the lobby with a beautiful fireplace and great ambience in the evening.
I would definitely recommend this hotel to anyone visiting the Boulder area.