Alternative to Washington Union Station for December

Although I discuss hotels near Washington Union Station on my website, there is a great alternative near the Baltimore/Washington International Airport.  There is an Amtrak station right at the airport. The Aloft Baltimore Washington International Airport provides complimentary shuttle transportation to the Amtrak station (about 1/3 mile away) and the airport itself 24 hours a day.  From the station you can take Amtrak or MARC trains to Washington, Baltimore and beyond.  The hotel has 24-hour food pantry, bright and airy hotel rooms and complimentary hotel-wide Internet access according to its website.  And through the end of December, you can receive 50% of your second night's stay if your first night is Thursday, Friday or Saturday!  It is usually cheaper to stay outside of DC and now it is much cheaper!