I booked our condo thru Hawaiin Condo Resorts and everything went very smooth. We arrived late in the evening (11pm) so we had to pay for a late check-in even though they guy only had to cross the street to bring us the keys. We stayed in unit 1605 which was close to the elevator and we were facing Seaside Ave so we just had to look to the right to see the ocean and down to see the pool. There is only sun by the pool from about 11am to 3pm and it closes at 7pm. A parking stall came with our room at no extra charge and that was nice to have as we had a car. Unfortuneatly the first night we were there our brand new convertible was keyed and the staff we not very helpful and said they saw nothing on the surveillance tape. We also received a warning for parking in our own stall but got that cleared up PDQ as well. The staff got friendlier as time passed though and seemed genuinly concerned as to how we made out with our vandalised car.
The a/c worked great, many times we shut it off and opened the lanai door as it was getting too cold.
I saw roach hotels in the room but I never saw a bug of any kind. I was glad I took dishclothes and teatowels as there were none in the room. Also, there is laundry on every floor but the washing machine on our floor was out of order the whole time. You have to buy a 'laundry' card from the front desk for $5 and load it at a machine in the lobby, its 1.25 to wash and .75 to dry. We had to go and buy pillows as the ones provided were extremely flat. I know I will be leaving some the things I purchased for here in the room but I have no idea if they will stay there.
Things I would suggest you take along if renting a private unit is a paring knife, dish and hand soap, dishcloth and teatowel, salt/pepper, cling film/tin foil, laundry soap/dryer sheets and toilet paper and it's expensive here. I guess it depends on the length of your stay. We stayed for 3 weeks.
There is also and iron and ironing board and a vacuum as you are on your own, you have to supply your own toilet paper as well.
This unit is in a great cenral Waikiki location, close to everything.
It can be noisy but that's Waikiki, I don't know if you can find a 'quiet' place there.