We have the lamp at home in our office, which contains 2 large desks. The illumination is very good, especially due to the indirect lighting via the white ceiling and walls. I would say that if you don't have a larger than average living room or a wall and ceiling colour other than white, the lamp will do a good to very good job.
This lamp (with a diameter of 42cm) is indeed very bright and completely illuminates a living room. Vacuum cleaning also possible in winter without any problems 😎