Absolutely, that sounds like an exciting plan! Spain is full of rich history and beautiful landscapes.

Best Time to Visit:
The best time to visit these Spanish cities is during spring (April to June) and fall (September to November). The weather is quite pleasant and perfect for sightseeing, especially in Figueres, Girona, and Cadaqués.

Route and Accessibility:
The closest international airport is Girona-Costa Brava Airport. From there, you can easily reach Girona by bus (approximately 20 minutes). To travel from Girona to Figueres, the train is the most convenient option, with a travel time of about 40 minutes. For reaching Cadaqués, buses from Figueres are available, and the journey takes around 2 hours.

Accommodation and Booking:
Accommodation options are numerous, ranging from luxury hotels to budget guest houses. It is recommended to book your accommodation in advance, especially if you're planning to visit during the peak tourist season.

Clothing and Essentials:
Pack comfortable clothes with a mix of warm and light layers, depending on the season. Comfortable shoes are a must for exploring. Don't forget essentials like sunscreen, hats, and sunglasses for the sunny days.

Health and Safety:
Spain is quite a safe country. However, it's always a good idea to have travel insurance covering accidents, illnesses, and theft. Stick to bottled water and ensure your regular vaccines are up-to-date before you travel.

Local Etiquette and Respect:
Spanish people appreciate politeness and respect for their traditions. It is common to greet locals with a handshake. Avoid discussing political issues. The locals in these areas also appreciate it when tourists attempt to speak a little Spanish.