Fairfield by Marriott Saga Ureshino Onsen will open in July and now has a website: https://www.marriott.com/en-us/hotel...nsen/overview/
There is also a website for all Fairfield by Marriott hotels in Japan with much more information: https://fairfield-michinoeki-japan.com/
Amenities for Fairfield by Marriott hotels are listed as free hot breakfast (eco bag or breakfast box [see photo below] that apparently need to be ordered in advance), free wifi, free coffee/tea, free parking, onsite coin laundry, etc. Fairfield by Marriott appears oriented to a young demographic and competes with low-cost Japanese hotels such as APA, Toyoko Inn, and others at a higher price in non-urban areas.
Tripadvisor has reviews of Fairfield Inn and Suites by Marriott Tochigi Nikko, which should give a good idea of what to expect: https://www.tripadvisor.com/Hotel_Re...ure_Kanto.html

Free Breakfast Box