2026 Washington, DC Travel Cost Study — things-to-do-in-washington-dc.com/washington-dc-trip-cost/
Published 2026-10-25 by the Things to Do in Washington DC editorial team.

Licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to reuse, also commercially, with credit and a link:
  Source: 2026 Washington, DC Travel Cost Study, things-to-do-in-washington-dc.com (CC BY 4.0)

hotel-prices.csv     our measurement: 1555 prices of 218 hotels on Google Hotels, 22 nights (November 2026 to September 2027), 2 adults, one room, read 2026-10-25
                     column "search": "deeper read" = a hotel found only by reading that night again to result 100 (the main
                     search reads 60); used for the star-class and weekend figures, not the all-hotel figures (87 rows)
activity-prices.csv  our measurement: GetYourGuide "from" prices, read 2026-10-25
                     listed in EUR, converted at 1.1193 (ECB euro reference rate, 2026-10-23)
cited-prices.csv     meal and rental-car prices published by others, quoted word for word with source and date
official-prices.csv  tourist tax and public transport fares from official sources