If Im looking at the correct Hotels. The Holiday Inn is connected to the Machine Shed Restaurant and shares the same parking lot. That restaurant can get pretty busy with limited parking. However I used to meet my ex wife to exchange my daughter in that parking lot and there happened to be a lot of open spots. With that being said, Im not sure you will fit more than 3-4 combos in that lot. Just my guess.
The Residences Inn is brand new and in a very busy shopping area. I honestly dont have a clue how much parking is near that. It might be best to call them and mention you will have a truck trailer combo and do they have room for parking.