We had a great time at this apartment. It is very convenient to multiple metro lines and to some of the tourist attractions in the Montmartre area. There is a sofa bed in a small living/dining room, a loft bed in the adjoining office, and a double bed in a bedroom down the hall.
We debated a hotel, but with two adults and two kids (ages 4 and 6), we knew that it would either be too cramped or exorbitantly expensive. We're glad we opted for the apartment.