I stayed for almost a month in Kate's upstairs unit. The location is excellent--a 5 minute walk through a gorgeous neighborhood to Burlingame's main downtown strip. The kitchen appliances, full size washer & dryer (inside the unit), private outdoor patio, and reserved parking spot were great. Be aware that Caltrain runs close-by throughout the day and a couple times after midnight and by law is required to honk its horn. I thought I might be bothered by this but I actually found it quite soothing.
Some minor inconveniences: The shower and bathroom have a pretty low ceiling height and will be uncomfortable for anyone 6'+. The door to the dishwasher opens directly in front of the kitchen sink so doing dishes is a challenge.
During my first day there were some minor maintenance needs (slow shower drain & pilot light in heater) but Kate was super communicative and quick to get them resolved.
Overall was a great stay.