London

Here's an ideal itinerary for 3 days in London:

Day 1:

• Start your day with a hearty breakfast at The Breakfast Club in Soho, known for their delicious pancakes and eggs benedict.
• After breakfast, take a stroll through the bustling streets of Soho and make your way to Trafalgar Square. Admire the iconic Nelson's Column and the beautiful fountains.
• From Trafalgar Square, walk down Whitehall and visit the Houses of Parliament and Big Ben (currently under renovation until 2021).
• Cross over Westminster Bridge and take a ride on the London Eye for stunning views of the city.
• End your day with dinner at Dishoom, a popular Indian restaurant in Covent Garden.

Day 2:

• Start your day with a visit to the British Museum, home to some of the world's most famous artifacts including the Rosetta Stone and the Elgin Marbles.
• After the museum, head to Oxford Street for some shopping. This street is home to some of the biggest department stores in London including Selfridges and John Lewis.
• In the evening, catch a show in the West End. There are plenty of options to choose from including musicals, plays, and comedies.

Day 3:

• Start your day with a visit to Buckingham Palace to see the Changing of the Guard ceremony.
• From there, take a stroll through St James's Park and make your way to the Churchill War Rooms, where you can learn about Winston Churchill and his role in World War II.
• In the afternoon, visit the Tower of London and see the Crown Jewels.
• End your day with dinner at Hawksmoor, a steakhouse in Spitalfields known for their delicious cuts of meat.

As for accommodations, I recommend looking into hotels in the Covent Garden or Soho areas as they are both walking distance to many downtown attractions. Some options include The Nadler Soho, The Z Hotel Soho, and The Hoxton Holborn.