Of course! Visiting Banská Štiavnica, Bardejov, and Vlkolínec in Slovakia is a great choice. Here are some travel tips:

Best Time to Visit:
The best time to visit these Slovakian towns would be from May until September, during the warm summer months. Spring is also beautiful when the flowers are in bloom.

Route and Accessibility:
you can reach Banská Štiavnica, Bardejov, and Vlkolínec quite easily by trains or buses from Bratislava or Kosice, the two major cities of Slovakia.

Altitude and Acclimatization:
Though Slovakia is a mountainous country, these cities are not at very high altitudes, so you may not have to worry about acclimatization. However, always monitor your health.

Accommodation and Booking:
There are several options from budget to luxury in these towns, including hotels, pensions, and bed & breakfasts. It’s advisable to make your bookings in advance, especially if you're travelling in peak tourist season.

Clothing and Essentials:
Pack comfortable clothing suitable for mild to warm weather during summer. A good pair of walking shoes will come in handy as you explore the towns. Also, carry essential medicines, sunscreen, a hat and refillable water bottle.

Health and Safety:
While Slovakia is generally a safe country to travel to, always take basic precautions to ensure your safety. Ensure you have allergy medication (if required) and remedies for basic health issues like colds, upset stomachs, etc.

Local Etiquette and Respect:
While visiting these places, respect the local customs and traditions. Learn a few basic words in Slovak, it’s appreciated by locals. Always maintain a decorous conduct while visiting any religious or local sites.