The minimum, this stay should include the accommodation for you. In exchange, you will have to practice your native language with the host. All other conditions related to the stay will be fixed in the agreement previously established between the parties.
As in the previous question, the minimum received for practicing your native language with the host will be the accommodation, other extras (food, excursions, collected ...) will be previously fixed in the agreement.
You will have to take this decision along with the host since he/she is the one that will allow or not to stay longer at his/her home.
On the other hand, you should contact firstname.lastname@example.org because we will have to handle the increased duration of the insurance contract for the language stay.