Put the nights in the right places
Book the train to your actual coastal village or nearby station. Choose cards around the walks and rides you will use. Portovenere has no railway station; adding it on departure day needs a return to a rail connection and a generous margin.
Plan the visits
Genoa · Cinque Terre. These guides explain the current ticket choices, arrival points and useful areas for a room. Reserve the visits that matter after checking travel days, with arrival afternoons left flexible.
Shorten the trip
Reduce village stops instead of adding another room change.
Build the budget from nights and days
The day figures add up to €667.00 for one traveller before the extra costs below. Day notes show accommodation, meals, local travel and small extras. The private-room line buys the whole room; divide only that part when sharing. These are chosen allowances, not measured averages or available room offers. The final day has no extra overnight allowance in the Italian section.
Add paid visits, excursions, intercity tickets and airport travel. Replace the stay amount with the full booking cost, including taxes and cleaning. The city budget cards are an alternative way to plan the same days, so do not add them on top of this subtotal.