I can only review the unit Byer 8 as that is the one we stayed in.
We stayed in the 2nd floor room of that unit (which is actally the 3rd floor of the building.)
We had a pleasant stay. Twin Rivers is in an excellent location if you are planning to visit the Winter Park Resort for skiing.
There is a Safeway supermarket very close. There is a bus that will pick you up right outside the property and take you downtown and to the ski resort.
As previous posters noted, there are trains that sometimes come by in the night. The trains didn't bother me.
We were not in the rooms that much as we were constantly out exploring and having fun, but it was a nice place to come back to at the end of the day to unwind and catch some zzz's, before heading out again each morning.More