The brightness required of light depends on the purpose of the luminaire. If you use it as a reading lamp, we recommend at least 500 lumens. If your floor lamp shall supply you with room light, you can follow the general rule of 100 lumens per square meter. A living room with a space of 20 m² thus needs a lamp with 2.000 lumens. Are you rather in search for a cozy atmosphere? In that case, an ambient light with less than 400 lumens, shedding light without being too bright, is a good choice. Or think about a dimmable variant as an alternative.