Absolutely! Your selected destinations are full of rich culture and beautiful sights. Here are some tips to help you during your trip:

Best Time to Visit:
The best time to visit Madrid, Barcelona and Venice is during the spring (March to May) or fall (September to November) when the weather is pleasant and the crowd is less. However, be aware that Venice is experiencing issues with flooding specifically in November.

Route and Accessibility:
To get around these cities, you can use public transport such as metro, buses and in case of Venice, the vaporettos (water buses). They have well-connected airports and train networks to move from one city to the other.

Altitude and Acclimatization:
The cities are near sea level so altitude sickness is not a concern. Still, it's always good to keep hydrated and give your body time to adjust after the flight.

Accommodation and Booking:
Hotels can fill up quickly, so book your accommodations in advance. These cities offer a range of choices from budget to luxury to choose from.

Clothing and Essentials:
Keep your clothing light but carry some warm clothes as well, as evenings can get cold. Also, pack comfortable walking shoes as these cities are best explored on foot. Sunblock, hats, and sunglasses are essential for protection against the sun.

Health and Safety:
Always take care of your belongings. These are tourist spots and can be crowded, making them a target for pickpockets. Also, basic travel insurance is always a good idea to cover any unexpected incidents.

Local Etiquette and Respect:
While visiting any monuments, cathedrals or museums, be respectful and quiet. Follow any posted guidelines, dress modestly and try to learn a few basic phrases in Spanish or Italian, locals always appreciate it.