First of all, I highly recommend that you map out the location before you head out. We had a little trouble finding the place, but eventually succeeded. It is located in Kailua one block west of Oneawa Street at the intersection of Kihapai and Hoolai Streets (southeast corner of the intersection).
When you arrive, ask for at least two more malasadas than you think you might want. That way you won't have to wait 10 more minutes once you've decided that they are indeed the best on the island! The staff were very friendly during our visit and I would consider this location a must-stop for anyone with a sweet tooth. I'm practically drooling now just thinking about the warm, fresh morsels from heaven!