We didn't check in at the house before 3 AM but luckily for us, that wasn't a problem at all. Beside getting a carticket, our stay at the guesthouse was wonderful. Beautifully and very quietly located , we also chose the guesthouse because it's close to Universal Studios. Communications with Keiko was very easy and she replied instantly. Parking wasn't really a problem, but as naive scandinavians, we did not know that you have to park your car in the same direction as the side you park it in.
We would definately recommend Keiko and her guesthouse at any time.