The appartment is great. We were 3 people, though it had the capacity for 4 people.
The house was very clean, it had an excellent heating system, it had a good kitchen with all the equipments we needed to cook.
Its location was 20 minutes from the Eiffel tower, and the "Felix Faure" metro was just a 3 minute walk away, where we could take the metro and quickly go to every part of the city we wanted.
The host was excellent, he was avalabile at all times and even came to show us how to turn on the stove.
Regarding all the aspects, we would definitely reccomend the appartment for 4 people or less.