I have only been to the Trumbull Marriott for business as I am from this area. Each of the conference spaces I have been to have been easy to find, comfortable, spacious, and useful. Coffee has always been put out in the rooms, which I appreciate!
All of the staff members that I have interacted with have been friendly and helpful.
Parking is plentiful and no spots seem to be too far from an entrance. There are trees that cover many of the parking spots, which is nice for parking in the warmer months so when I leave a conference my car isn't too hot.
This is one of the best (and only) really good conference facilities around this area. It certainly is the only one that can accommodate everything from a small group of professionals to a multi-day conference with breakout spaces.