Vienna

Oh, how exciting! Vienna is a beautiful city with so much to offer, and I'm sure you and your girlfriend will have a wonderful time exploring it together. Since you mentioned you're on a budget, I've crafted an itinerary that includes plenty of free or low-cost activities for your 6-day stay.

Day 1:

• 14:00: Arrival in Vienna
• Check into your accommodation and freshen up
• Take a leisurely stroll around the historic city center, starting at St. Stephen's Cathedral
• Enjoy a budget-friendly dinner at a local eatery

Day 2:

• Morning: Visit the Naschmarkt, Vienna's largest and most popular market
• Afternoon: Explore the Belvedere Palace gardens (entry to the gardens is free)
• Evening: Attend a free classical music concert at St. Stephen's Cathedral (check the schedule in advance)

Day 3:

• Morning: Visit the Schönbrunn Palace gardens (entry to the gardens is free)
• Afternoon: Take a walk along the Danube River or visit the Prater Park
• Evening: Picnic at the Augarten Park

Day 4:

• Morning: Explore the Hundertwasser House and KunstHausWien (consider purchasing a Vienna Pass for discounts on entry fees)
• Afternoon: Visit the Museum Quarter (some museums offer free entry on certain days)
• Evening: Enjoy a budget-friendly dinner at a local restaurant in the area

Day 5:

• Morning: Take a walk through the Vienna Woods or visit the Lainzer Tiergarten
• Afternoon: Visit the Vienna State Opera House (guided tours are available at a reasonable cost)
• Evening: Attend a free outdoor film screening or music event in the city

Day 6:

• Morning: Visit the Hofburg Palace and explore the surrounding area
• Afternoon: Wander through the historic streets of the Jewish Quarter
• Evening: Enjoy a farewell dinner at a cozy Viennese café

Remember to take advantage of Vienna's excellent public transportation system to get around the city easily and affordably. Have a fantastic time exploring Vienna with your girlfriend!