Hello! It's great to hear that you're planning a trip to Mdina, Valletta, and Mellieha in Malta. I'd be happy to provide some travel tips.

Best Time to Visit:
The period from April to June is considered the best time to visit Malta due its mild and pleasant weather. September and October are also good, if you want a warm Mediterranean holiday without the highest summer temperatures.

Route and Accessibility:
The Malta International Airport is well connected to major international destinations. From there, you can take a taxi or bus to reach Mdina, Valletta, and Mellieha. Public transportation in Malta is reliable, and the islands are small enough to easily navigate by car too.

Accommodation and Booking:
All three cities have an array of accommodation options, from budget to luxury. It's recommended to book well in advance, especially for trips during the peak tourist season. Consider using a reputable online travel agency for the best rates and availability.

Clothing and Essentials:
Pack lightweight, breathable clothing for the warm seasons. If you plan to visit historical or religious sites, bring modest attire. Don't forget your bathing suit, sunscreen, and a hat for beach visits. Comfortable walking shoes are also a must for sightseeing.

Health and Safety:
Malta is generally very safe for tourists. However, it's always wise to have travel insurance in case of emergencies. Stay hydrated in the heat, especially in the summer months. While tap water is safe to drink, you may prefer the taste of bottled water.

Local Etiquette and Respect:
The Maltese are known for their hospitality. Respect local customs and traditions, especially when visiting religious sites. Dress modestly and ask for permission before taking photos. Tipping is customary in Malta, so feel free to leave a small gratuity for good service.