Sure! Visiting Tunis, Sousse, and Monastir will take you to the heart of Tunisia's rich culture and history. Here are some travel tips:

Best Time to Visit
Tunisia experiences a Mediterranean climate. The best time to visit is during Spring (April to June) and Autumn (September and November) when the weather is milder. It's also the perfect time to explore the Roman ruins without having to deal with the harsh summer heat.

Route and Accessibility
Tunis, the capital, is well connected with international flights. Sousse and Monastir are easily reachable from Tunis, both by train and by car. These towns are also well-connected with each other via train and road.

Altitude and Acclimatization
Tunisia is relatively flat, so altitude sickness won't be an issue. However, do give yourself time to relax and acclimate if you've traveled a long distance to get there.

Accommodation and Booking
You will find a blend of luxury resorts, mid-range hotels, and budget-friendly accommodations in these cities. It is recommended to book in advance, especially during peak season.

Clothing and Essentials
Given Tunisia's predominantly Muslim culture, modest clothing is recommended. Pack lightweight clothing for hot weather, but also bring a shawl or jacket for cooler evenings. Comfortable shoes are essential for exploring the historic sites. Don't forget your sunglasses, sunblock and a hat for sun protection.

Health and Safety
Standard vaccinations are recommended for travel to Tunisia. Always ensure you have travel insurance. Tunisian cities are generally safe but always take standard travel precautions to protect your valuables.

Local Etiquette and Respect
Remember, Tunisia is a Muslim-majority country. Always respect local customs, especially during the holy month of Ramadan. Be respectful when visiting religious sites, dress modestly and refrain from eating, drinking or smoking in public during fasting hours on Ramadan. Always ask for permission before photographing people.