This place is incredibly well-stocked with beach supplies (towels, umbrella, chairs, snorkel gear, boogie boards) and kitchen supplies. It was very clean and functional, and had a good location close to Waikiki beach and lots of restaurants. For the location and functionality, this place was a great value.
Parking can be tricky. The downstairs garage fills up quickly, and Waikiki Banyan didn't allow public parking when we visited. We ended up doing street parking one night, and parking at Waikiki Sunset about 6 min walk away on 2 other nights. The Waikiki Sunset parking garage rate is pretty pricey for non-hotel guests though ($6 per half hour, up to $40+/day, don't remember the max amount).
We felt pretty safe walking around the area in the evening due to the high volume of tourists. There's an awesome spam musubi placed called Iyasume Musubi about 2 min walk from the airbnb, and we got spam musubi from there 3 out of the 7 days that we were there. Beware that lines can get long starting early (around 8am) since it's such a tourist-heavy area.