Need help about an invitation letter from my Polish friend

i'm thinking about going to Krakow next month. i'll stay at my friends place. and i heart that she should send me an invitation letter. she doesnt have an idea what to write? and i dont know what is neccesary too? if someone can help me about invitation letter i would be really glad.
Thank you... :)

where are you from Elisa?

Turkey

she should state that she is inviting you to Krakow for a visit (how long) to stay at her place. She should mention that you are coming to visit Poland, especially Krakow, which is a great city to visit and has always been an interest to you bla, bla.......
Maybe that the food and accomodation is provided by her.
OH, you have been friends (for how long) and she wanted to show you Krakow and Poland (maybe she should mention other places to visit) etc
She needs to be honest in this invitation.

tell her to write your passport number, name, country and give good reason to why you must come to meet her :)

The family are all looking forward to meeting you.

I'd love to show you all those beautiful places you talked about in your letters/e-mails.