I have been to Mizuho about 4 times in the past year, and I like it! I have also been to Osorokan and Geihoku, and Mizuho is my favorite of the three.
My one complaint is the first gondola. It's an old, slow 4 seater gondola that takes a long time to take you up to the top. When you arrive, or come all the way down, you have to take the gondola back up. It's a waste of time. It would be much better if they updated to a 6 person high speed lift to get people up faster, and spead out to the other runs.
From December, 2006
Snow condition on visit:
Fresh powder on packed powder
Things I liked:
1 hour away from the city, decent choice of runs, good priced, and you can take the bus there!