Look at Cidtadines Louvre I have stayed there twice it is right by the Louvre and there are great restaurants... you are only a few minutes to the Opera Garnier and there is a Monoprix which has a Grocery store down stairs on Ave de Opera... You are central to everything... the hotel is beautiful they have two bedroom apartments and studios... Excellent.. It is at 8 rue de Richelieu behind the comedy d' Franchaise... They have sofa beds in the studio's but it was comfortable for our 10 day stay.