My wife and I went to Circo to celebrate our first anniversary and were greatly impressed.
To be honest, the view alone - Lake Belagio and its famous fountains, qualified this restaurant for at least three stars. BUT they worked very hard for the last two!
To begin with the service throughout was thorough but not pushy. I greatly respected their efficiency and politeness. The only delay came from the kitchen for which our waiter apologized. When the food did arrive it made up for the delay. Ironically, the appetizer of beef carpaccio was particularly noteworthy. It was melt in your mouth good!
The cherry on top was the dessert with "Happy Anniversary" spelled out on the plate! That little detail was not necessary but greatly appreciated by my wife and I.