this is a fun place to stay just for the hilarity of the rooms. i went with three friends and stayed in the italy room - kitsch lamps, pink bed spreads and gold venetian bathroom. it is a masterpiece of a hotel,andmore of a spectacle than a really good hotel.
for example,the hotel is on a freeway so a walk away from the restaurants and main strip of san luis. you can eat in the restaurant in madonna inn if you dont mind a lot of pink!
in short, go to say you did it.dont expect a luxurious hotel experience but expect the unexpected! do it as a one nighter stop off en route up or down the big sur.