Day 1: Take the morning train to Edinburgh Waverley from your local station. You'll be staying at the Leonardo Royal Hotel. Princes Street’s shops and bars plus Edinburgh Castle are approximately ten minutes’ walk from the hotel and you have the day at your leisure to explore the shops and the sights. Check-in is from 3pm but if you want, you can leave your bags at reception beforehand, and return to the hotel when you're ready.
Day 2: Start the morning with a buffet breakfast at your hotel, and then you have the whole day to explore Edinburgh.
Day 3: Another buffet breakfast at your hotel, then your time is at leisure until it's time to make your way to the station for your return train journey home.