We loved our stay at Antoine’s apartment, it worked really well for 4 adults and two children but would work equally well for 3 couples. There is plenty of room and it is very well equipped. The position is brilliant, easy access to metro, and walking distance to lots of great eateries and social areas. The walk to the river or Marais is great, weaving off the main streets to find some real gems. We would quite happily return to Antoines apartment if we were in Paris with a group :-)