last year when we were in a studio, others had left extra bowls, plates, flatware, etc. So there were actually more than four sets. But you can't count on there being extras, so you may want to be prepared just in case.
I had brought paper bowls (sturdy kind) with us because some of the meals I had prepared were of the soupy type (chili) and didn't want to run into trouble with nothing to eat out of. There was a small bottle of dish detergent and a small sink which was fine for the few things we needed to wash.
Have a grand time and enjoy your trip!