Two couples are plenty comfortable in this space with very quiet bedrooms, separate showers and a very nice sized living space. There is only one toilet, but it’s in it’s own separate room and didn’t cause any issues at all since you didn’t have to go into a bedroom to use it. The street is not very busy, so you don’t get a lot of traffic noise from outside.
The staff was very responsive, proactive and fixed a burned out light bulb the morning after we asked it be replaced. The central location is great for walking to all of the sights and is still close enough to numerous metro stations should you want to explore that way. Overall, a very nice, comfortable place to stay in the middle of Paris.