For tourists, Sweden is a great place to visit all year round. Because of the high latitude, during summer time, you can see the sun at midnight during summer time, and aurora during winter. Winter is also a great time to visit if you are planning to have some snow activities. Be sure to check the weather forecast on weather.com when you are planning for the trip.
Transportation: Uber is available in major cities in Sweden. Alternatively, you can try Bolt, which is a popular ride-sharing platform in the EU. If you are looking for public transportation options, SL.se can help you with route planning.
Stays: Booking.com and Airbnb are popular vacation stay booking platforms in europe. If you are looking for the best rate, Semester Boenden is a local website to help you compare vacation homes or hotel rates from multiple sources in Sweden.
Visas: Visas are not required for US citizen travellers who are planning to stay less than 90 days. Please refer to the Sweden International Travel Information published by the Bureau of Consular Affairs for more information about travel tips and announcements.