Romolo was very hospitable. The room was clean, the bed was comfy, the bathroom was right next to it, it INDEED has a nice private entrance, the location was perfect for exploring Honolulu and the east side of the island, and I felt very safe and secure!
The house indeed faces a highway, but the noise did not interfere with me whatsoever -- I came from Seattle, where it's way louder all hours of the night. This highway quiets down significantly right before bed. As in previous guests' reviews, earplugs were provided, just in case.
The greatest thing about this stay was the value. It's right on the bus lines, but Romolo will still rent his car to you if you need, as well. It was wonderful to find an outstanding place like this for under $100. Also, my plane leaves at 10pm, but I currently get to enjoy the rest of my stay without having to lug my crap around, because Romolo OFFERED to let me leave it there after I checked out so I could do some more exploring.
As for the ONE negative review, do yourself a favor and please disregard that. Romolo and Anna did not deserve that kind of libel. I found approximately ZERO cockroaches anywhere in the house, and though the carpet in the bedroom is older, it is still immaculately clean. My bed had fresh, clean sheets, and I don't think Anna (Romolo's incredibly sweet and kind girlfriend) stopped cleaning the entire time I was there.
This was a wonderful stay! Romolo is also super interesting, as he surfs and teaches Jujitsu, so if you're into any of those things, that would be a bonus. He will also tell you where EVERYTHING interesting in the area is located upon your arrival.