My wife and I traveled to St. Louis recently for a conference and spent a couple nights at the Omni. While it is a few blocks from the convention center and slightly farther to the Arch, the hotel offers a free shuttle service downtown that is very convenient. The hotel is not large which is actually convenient for getting back and forth to your room. Sometimes a hotel is so large and sprawling that it takes 10-15 minutes just to grab something in your room and get back to the front door. When we stayed, it was about half full but still very quiet. When we stayed, there was a very nice breakfast buffet. The staff is extremely friendly and knowledgeable, so I will concur with the various positive reviews of staff in other postings here on tripadvisor. I am happy to recommend this hotel to anyone who needs to be in downtown St. Louis for business or pleasure.