What is the easiest, most inexpensive way to get from the airport to your motel?

Train, then walk or bus. Where is your hotel?

Eahmmie, how many are travelling with you or will you be on your own? How much luggage will you have and also others if they are travelling with you? Where in Rome is your hotel located? There is the train to the Termini (the train station) in Rome. Most people need to take a taxi or bus from there to their hotel. There are taxis and shuttles from the airport also. Easiest and most inexpensive is not usually the case.

There are trains between the airport and other stations in Rome. It might make more geographic sense to head to a station other than Termini, and BONUS! the fare is cheaper.

So, again, where is your hotel?

east expesnive and most convenient are usually mututally exclusive.

It depends on how many of you there are, how much luggge you have and how comfortable you are hauling it around and the location of your hotel.(I certainly hope you aren't staying in a motel - whch would be nowhere near the tourist area of Rome.)