Francisco's place is as described.
It's located in an older building/hotel, but don't let that put you off. The hotel staff and other guests that I encountered were very welcoming and friendly.
The location is safe and couldn't be better. It's situated a stone throw away from Waikiki Beach, Diamond Head Trail, downtown Honolulu, car rentals, tour stops, local parks and, numerous restaurants, cafes and stores. In short, it's where you'd likely want to be. That said, it's off to the side, so you're not in the "main traffic".
The unit, although somewhat small, nicely accommodates two people and has a great view.
When I return to Oahu, I will definitely check to see if his place is available.