The hotel is located in a upscale business district (think Miracle Mile) and sports a very impressive entrance and lobby. There are numerous good restaurants within a short walking distance from the hotel. The room was comfortable - good size with plush bedding. The bathtub/shower could have been cleaner - there was some mold on the tiles.
The room was quite noisy. During the day (starting at about 10:00AM) there was continuous construction noise coming from above the room which is probably transitory since - at some point in time - the construction will be complete. One night there was a wedding taking place in the hotel. The noise and music could be heard in the room lasting almost until 3:00AM.
The only parking option at the hotel is valet. The cost is $24 + tax per day with in and out privileges. A less expensive option can be found one block away on Aragon Avenue - Public Parking at $12 max per day.
All in all we would stay at the Westin Colonnade again but would request a quiet room.