Are these few sentences correct?
The sending organization paid for my travel, insurance and local transportation. The host organisation paid for the accomodation and boarding.
Everything was paid by the sending and the host organisation except for the transportation (we paid them, but we will have it reimbursed).
I visited museums, libraries, parks and went out with my friends.
The Leonardo Da Vinci project is a fantastic project, but demands experience, I suggest you to ask for help at work if there is something that you can't do and to ask again when you don't understand anything. It's important to be honest, to have the willingness to learn, and accept a new culture.
It would be great if every participant could work only using the language of the host Country (or at least only English)