Italy in June booking accomodation question - Travelling around Italy (from Bath, UK) - Trains and accomodation booked as far as Bologna (26th May) + a stay in Naples & Salerno also booked. Our route is roughly UK - via Paris to Geneva, Bologna, Umbria / Tuscany, Naples area, then Sicily.

We plan 3 ish days in Umbria or Tuscany (end May) then 7 or 8 days in Sicily (from 5th June). We would like to have some travel flexibility - I'm assuming we can book hotels / airbnb's (budget circa max 130 Euro for a double) on the fly (a day or 2 ahead) - is this correct / any thoughts?

Thanks