Very functional place. The space was comfortable for us (2 adults and our 7-month old baby daughter) for our 4 days there. The best part is the location, close to the Opera Garnier, Grand-Boulevards, Bourse, Gallérie Lafayette, etc
A minor improvement would be the shower: it was really narrow (good luck Americans :) and the water switched from lukewarm to scathing hot with a 1 degree turn (maybe add a safety knob?).
Otherwise all was great: clean, easy access, comfortable, and phenomenal location.