Others have commented on the beautiful space and how lovely Fung and Mike are. I totally agree! I'll emphasize how convenient the location is for Volcanos National Park - only 6 minutes to the visitor center. Also, I was impressed by the very many thoughtful things that Fung has done - extra blankets, space heater (It's not too cold in the room, just useful at night to make it a tad warmer), cooking oil and salt & pepper in the kitchen, paper towels and napkins available so you don't have to buy, etc.
You want multiple days to see the volcanoes if you like to hike, attend ranger programs, etc.. Stay with Fung and Mike to return to a wonderful, relaxing place (bigger than it looks in the photos) each day. Take advantage of the nice kitchen to save time and money over going out and to pack lunches for when you're enjoying the sights. (Our days in the park rarely had us near food at lunchtime.) You won't be sorry!