Absolutely! Here are some travel tips for your visit to Bucharest, Brasov and Cluj-Napoca:

Best Time to Visit:
The best time to visit these Romanian cities is between April and June, or from September to October, which is the shoulder season and offers the best weather and lesser tourists.

Route and Accessibility:
All these cities have good flight connectivity from various European destinations. Bucharest is the capital of Romania and you can get domestic flights or trains to Brasov and Cluj-Napoca. You can rent cars or take public transportation to travel within the cities.

Altitude and Acclimatization:
Altitude is not a concern as these cities are located at relatively low altitudes. Bucharest is just 88.9 meters above sea level, and Brasov and Cluj-Napoca are at 625 and 411 meters respectively.

Accommodation and Booking:
There is a range of accommodation options from budget to luxury in all these cities. It's recommended to book your accommodation in advance, especially for the peak tourist season.

Clothing and Essentials:
Pack according to the season. The summer months can be hot so pack light, breathable clothing, but always carry a jacket or sweatshirt for chilly nights. The winters are cold, so warm clothing is a must.

Health and Safety:
In general, Romania is safe for tourists, but like everywhere, keep an eye on your belongings and be aware of your surroundings. Always carry travel insurance

Local Etiquette and Respect:
These cities are modern but still hold some traditional European charm. Dress modestly, respect local customs and traditions, be polite and respectful. Learn a few basic Romanian phrases to interact with locals.

Overall, take your time to explore the culture, food, and beautiful architecture of these Romanian cities, and enjoy your trip!