Mark was very quick with communication and resolved any issues we had almost instantly. The room was small/big enough for me and my wife and had an amazing view of Diamond Head from our balcony. The walk to the beach was maybe 3-5min.
My biggest upset was parking: I understand Waikiki is very packed, but there is very limited on-site parking which is not included with the stay if you can snag a spot. If you rent a car be prepared to pay for street parking and good luck finding a free spot to park overnight.
The Waikiki Grand is quite loud as there is a bar in the second floor and we were literally right above it. But we didnt mind it too much.
Other than the above, my only concern is we pay for a cleaning fee but still have to take our own trash out.