I plan to fly into Cusco and take the scenic train trip (PeruRail or IncaRail) to Aguascalientes. Machu Picchu the next day and the springs that evening. Train back to Cusco the following day to explore the historic city for the remaining afternoon and Mountain of the Seven Colors the following, and final, day before flying back out of Cusco that afternoon.
(Connect with Stewart to see this)