An Airbnb revenue forecast is a month-by-month projection of occupancy, ADR and revenue for one property, set beside comparable listings. Buyers use it to test a purchase, operators use it to check an arbitrage lease, and hosts use it to set targets for a live listing.
What I plan around in Budapest: Sziget Festival; Hungarian Grand Prix; Thermal-bath and ruin-bar tourism; Christmas markets. Guests I price for: European and North American travellers on 3 to 4 night stays in District V, VI and VII. Where I start: Festival and Grand Prix premiums, stag-group minimums, and district-level compliance as new rules roll out.
In PriceLabs or Wheelhouse I load Sziget, the Grand Prix, 20 August, the Christmas markets and conference dates, and set different rules for party weekends and family stays. Airbnb, Booking.com and Vrbo then follow the same calendar and minimum stays, so your flat earns on peak nights without attracting the wrong groups.
The service in general is described on my airbnb revenue forecast page; this page covers how I apply it in Budapest.