The Disney family kept a small, private apartment over the firehouse on Main Street U.S.A. in Disneyland. It wasn't the family's actual residence, but it seems that Walt, his wife Lillian and their two daughters spent time there entertaining guests and watching park activity from the apartment's balconies. The family spent a lot of time in this location as the park was being constructed in the 1950s, allowing Walt to supervise and monitor construction while also allowing his family to have a comfortable place to stay while they were at the park.
Since he does not resemble any specific breed of dog, Goofy is most likely a mixed breed or a mutt. In Disney cartoons, Goofy appears as a tall, anthropomorphic dog with black fur, an off-white face and white gloves similar to those of Mickey Mouse.