Flight
The closest airport is T.F. Green Airport in Providence. A ride hail to downtown Newport is ~$45 and ~40 min.
Flight
Alternatively, you can fly into Logan Airport in Boston. Rental cars are available at the airport, or there is direct bus service to downtown Newport via Peter Pan (https://peterpanbus.com/). The drive is ~1.5 hrs.
Train
The closest Amtrak station is in West Kingston, although Providence (PVD) works as well. A ride hail to downtown Newport from KIN is ~$30/~30 min and from PVD is ~$40/~40min.
Hotel
Newport has quite a few BNBs along with some larger hotel properties.
House Or Rental
Airbnb has a good selection of properties, to include larger rentals for groups.
House Or Rental
VRBO has a good selection of properties, to include larger rentals for groups.
Hotel
Rental homes and hotels rooms on the outskirts of Newport or in neighboring towns may be a bit more reasonably priced. For example, Middletown, Portsmouth, Bristol, Jamestown and North Kingston are an easy ride hail away. Airbnb/VRBO have inventory or you might consider the following hotels: - The Mainstay: http://www.mainstayhotelnewport.com/ - The Carriage House Inn: https://bit.ly/2Z7s60a - The Ramada: https://bit.ly/2YVBZhg