Hello! It's great to hear you're planning a trip to Poland. Here are some tips for your visit to Warsaw, Lódz, and Kraków.

Best Time to Visit:
The best time to visit these cities in Poland is during the Spring (May-June) and Fall (September - October) when the weather is more temperate. Summer can also be a nice time, but these cities may be crowded with tourists.

Route and Accessibility:
Beginning your journey in Warsaw, you can easily access the rest of the country. From Warsaw, Lódz is approximately a 2-hour train ride. Subsequently, Kraków is about a 2-hour journey from Lódz by train.

Accommodation and Booking:
All these cities have a plethora of accommodation options. It's advisable to book in advance, especially in the high tourist season in Summer. You can book through well-known hotel booking sites like Booking.com or Airbnb.

Clothing and Essentials:
Given the temperate climate, layering is key when packing for Poland. Carry a rain jacket for possible showers, comfortable walking shoes, and don't forget sunscreen and a hat for the summer months.

Health and Safety:
Poland is generally safe, but like any country, it's important to be cautious and aware of your surroundings. It's advisable to have health insurance especially for travel.

Local Etiquette and Respect:
Polish people are known for being hospitable. While visiting, respect local customs - for instance, it's customary to greet people with a handshake. Also, remember to say 'Dziękuję' (Thank You)!