Stayed over Christmas/New Years with our adult kids and their partners. The living area had plenty of space for all of us, and we were able to seat 8 at the dining table.
The fourth bedroom, if not used for sleeping, could be another small living area (has a sofabed and small desk; sofabed was comfortable for sleeping.) It wasn't totally clear from the photos, but there is a barn door which closes off this room from the kitchen so there is privacy when this room is used for sleeping.
We had an issue with slow drainage in the bathtub but the property manager responded promptly and the issue was resolved quickly and easily.