The Cluny apartment was in order, and my son and I had a fabulous time. Your suggestion of taking a taxi is the correct way to go to and from the apartment. I purchased some lovely, fresh flowers at the open market, and we enjoyed three dinners of various pates, cheeses, olives, French bread, and pastries. After an 11 hour day traveling to Versailles and touring the chateau and grounds, sitting around your dining table (with our shoes off) was very lovely.
We were disappointed in our mundane meal at Le Berthoud. It was much better two years ago. They also were not very busy. But, the restaurant down the lane in the 1400 house that used to be a barbershop was outstanding, and we dined there two nights. Their warm house napoleon with warm custard sauce was incredible! I look forward to staying with you again in about two years.