The Residence Inn in San Mateo on Winward is in a residential area of San Mateo near the Target shopping center. The units are 4 to a building and quite roomy. Our queen and sofa bed unit had a fireplace, sliding door to a patio and full kitchen with a full oven.
The unit was nicely furnished and clean. The bathroom has not been updated to have a granite counter. Our only ding is for the lack of noise insulation as we could hear too well the guests upstairs who weren't deliberately noisy.
The breakfast was the best at any Residence Inn with a lot of food made from scratch.