I played this in Japan a couple months ago when I was there on vacation with my girlfriend. They were in several arcades around there.
It's like house of the dead but with a whip for player 1, and player 2 has a sword or something. It was difficult to hear the music because the arcades there are so damn loud. I love Castlevania's music. We managed to get through the first boss, the grim reaper in about 5 minutes or so? I forget exactly.
As to if it's any good, well, in my opinion it was okay. Fun for a play through or two. I wasn't all that impressed with the motion control. I'd have to say the music and graphics were the best part.