Great location for travelers looking to make a quick and comfortable stop for the night around Diamond Bar. Since the household has young kids, be prepared to accommodate for that.
The house/room itself was very clean and well maintained. Amenities might seem lacking at first but if you ask Dina for something she is quick to respond and provide for you. I really enjoyed having access to the water cooler that she has. Final note is that you will have a much easier time if you know how to speak Mandarin. Overall a great stay and well valued for a nice, spacious area.