Sure, Explore the traditional charms of Portugal in Évora, Beja, and Lisbon. Here are some tips to enhance your visit:

Best Time to Visit:
April to June and September to October are indeed the best times to visit these cities as the weather is pleasant, and the tourist rush is relatively low. High summer can be hot, especially in Évora.

Route and Accessibility:
Lisbon, being the capital city, is easily accessible via direct international flights. From Lisbon, you can take a train or bus to Évora which usually takes under two hours. Beja is accessible from both Évora and Lisbon via train or bus.

Altitude and Acclimatization:
These cities are at relatively low altitudes, but it's essential to stay hydrated, especially during summer.

Accommodation and Booking:
Book your accommodations in advance. There are plenty of options ranging from luxury hotels to budget-friendly guesthouses in all three cities. In Lisbon, stay in a central district close to the city’s attractions to save travel time.

Clothing and Essentials:
Pack comfortable walking shoes and light clothing for the summer months. Always have a sun hat, sunscreen, and sunglasses on hand. For the cooler months, carry a light jacket or sweater.

Health and Safety:
Make sure you have an appropriate travel insurance. Stay cautious while exploring crowded tourist areas to avoid pick-pocketing. Always keep emergency contact numbers handy.

Local Etiquette and Respect:
Portuguese people appreciate courteous behavior. When entering someone's house or shops, greeting the owners is considered polite. While visiting churches or other religious sites, maintain dignity and dress modestly.