The five stars is not so much a function of the hotel as of the very friendly and helpful staff.
As hotels go this one is fine. The rooms are comfortable and the amenities are decent. They seem to have made some effort in improving the complimentary breakfast in the last year which is a good thing.
But the real draw has been the staff. Always friendly and helpful. On our last visit there was a significant snag with our reservation that technically could have caused us to be billed twice for the room through no fault of theirs. However the front desk manager was able to quickly and without any fuss resolve the matter and keep me from getting hit quite hard in the wallet.
That kind of service earns my loyalty and we will be staying there any time we are in Madison going forward.