Germany, Austria, Italy itinerary in December for 16 days

I will be heading to 3 countries in December for my honeymoon!

*Please let me know if there are any issues/suggestions/activities I can add!

*Day 1: Munich *Day 2: Munich - day trip to Nuremberg *Day 3: Munich - day trip to Neuschwanstein Castle or Schliersee or Eibsee *Day 4: Munich

*Day 5: Salzburg *Day 6: Salzburg - day trip to Hallstatt *Day 7: Innsbruck *Day 8: Innsbruck

*Day 9-12: Florence

• 2 day trip to either Pisa/Bologna/Lucca/Sienna

*Day 13-16: Rome