Nero, unaware of the turmoil spreading through the country, decided to sleep when he noticed the first light of dawn. A few hours of sleep was better than no sleep. Considering that he expected the next few days to be filled with studying and learning rather than physical exertion, even a few hours of sleep would be enough to bring him to top form.
At the same time, Edward drove to town, unafraid that the ever increasing Apparition curses might strike Nero while he slept. These days, it was incredibly dangerous to sleep alone, and without someone to keep watch. Fortunately, though it appeared as though Nero was home alone, there were guards hidden around the house, protecting it.
Neither curses, nor enemies would bother Nero.