Very good, would recommend to everyone while in Paris. If you want to see Paris by night would suggest taking the later tour but the last boat tour leaves @ 22:00 during summer months and the lights switch on @ about 22:00 in the city during summer months.
Very good, this is the only tour company that run a late night tour in Rome a must while in Rome, it is completely breath taking to see Rome all lit up especially St. Peters. Would suggest taking the bus and getting off at main attractions like the Colosseum in the day and then taking a full tour once again during the night just after 20:30 during summer. This is included in your ticket.