Absolutely, visiting Pyatigorsk, Kislovodsk, and Zheleznovodsk in Russia is a marvelous experience. Here are some travel tips to assist you in planning your trip:

Best Time to Visit: The most popular time to visit these regions is in the summer, from June to August, when the weather is warm. However, the spring (April and May) and early fall (September and October) can also be beautiful, cooler, and less crowded.

Route and Accessibility: The most convenient way to reach these cities is to fly to Mineralnye Vody airport. From there, you can catch a direct train or bus to Pyatigorsk, Kislovodsk, or Zheleznovodsk.

Altitude and Acclimatization: Although these cities are not situated at high altitudes, ensure you remain hydrated and rest appropriately after your journey to combat possible fatigue or travel-induced discomfort.

Accommodation and Booking: You'll find various accommodation options from luxury resorts to budget-friendly hostels in these cities. Booking your accommodation well in advance is highly recommended, especially during the peak season.

Clothing and Essentials: Pack clothing suitable for the season; lightweight clothing in the summer and warm clothes for the colder months. Don't forget to bring comfortable walking shoes for the city walks, and a compact umbrella or raincoat could be useful as well.

Health and Safety: Make sure you have travel insurance that covers health issues. Carry a first-aid kit and any necessary medications. Always ensure your personal safety and be aware of your surroundings.

Local Etiquette and Respect: Russian culture is deeply rooted in traditions. Always be respectful to local culture, customs and abide by local laws. Additionally, in Russia, it is common to greet people with a firm handshake.

Enjoy your trip to these beautiful Russian cities!