I would recommend a little bigger if you have room for it. If you have a small room like me then this is perfect. It Is just big enough so that I also can film a full body shot where I´m standing on 1/2 meter of fabric on the floor with the shoes included on the green screen.
Otherwise, it is okay to have a white or black background for filming otherwise. Everything looks better than your bedroom or a cheap messy office in the background as many are doing..
P.S. I Recommend getting a few extra clips got stretching the fabric more smoothly.