The monorail passes through California Adventure and the Grand California hotel, but you can't board in either of those places. You can't take it to the Disneyland Hotel, either - although you could do that years ago before the hotel moved. The Downtown Disney stop is just a short walk from today's Disneyland Hotel.

No, there is not a dedicated monorail station or stop directly inside the Disney's Grand Californian Hotel & Spa. The Disneyland Monorail system has only two stations: one located in Tomorrowland inside Disneyland Park and the other in Downtown Disney, located near the Star Wars Trading Post. While the monorail track actually passes directly through the center of the Grand Californian Hotel—offering a famous and picturesque view for guests in the lobby and certain courtyard rooms—the train does not stop there. However, the Grand Californian is widely considered the most convenient hotel at the resort because it features its own private entrance directly into Disney California Adventure Park and a very short walk to the Downtown Disney monorail station. Guests staying at the hotel can walk to the Downtown Disney station in about 3 to 5 minutes, where they can board the monorail for a quick trip directly into the heart of Tomorrowland, effectively bypassing the main front gates of Disneyland Park. This proximity makes the hotel a favorite for those who value easy transit and park access, even without a literal "stop" at their door.