One-night stay over Golden Week. Yes I know, it’s a terrible time to visit Japan, but still, it’s better than not visiting Japan.
Booked a base room and got upgraded to an onsen room with Mt. Fuji view. Pleasantly surprised by the upgrade since the hotel was quite full, but maybe it helped that we were only staying one night. “Lounge” was a small buffet with takeout boxes, as others have mentioned. Cold vegetables and pasta, and a few hot items like French fries, fried squid balls and roasted pork/sausages.
The public onsen was not the fanciest (bring your own towel) but fairly large, and the open-air onsen (alternating days for men and women) was quite nice.
Breakfast was good. By comparison, I also stayed at Fuji Speedway Hotel and IC Yokohama Pier 8 on this trip – those hotels were better, but their breakfasts were not.
Overall a pleasant stay, but I can’t really recommend it because of its location. It’s far from the tourist sights, and it’s even far from its own lake. Stark contrast to the lakeside hotels at Kawaguchi with their better views/ambiance, or the business hotels at Fujiyoshida with easy access to food and sights. Or compare to Fuji Speedway Hotel, which is also not very convenient to anything but has great Mt. Fuji views and is a much nicer hotel (not even considering the whole racetrack thing). In fact the driving time to most of the tourist sights from Fuji Speedway Hotel was probably about the same as the Marriott -- that's how out of the way it is.