Hi Roberto,
Welcome to the forum
You don't have to apologise for your English. Its OK and good you try to write in another language.
I can't recall this hotel/guesthouse ever being mentioned here before.
I would suggest you email the hotel and ask if there is a guest fee. If there isn't, print out the reply and take it with you if you stay there. Then there can be no confusion if they try and charge you
Here are the contact details
Contact Person: Khun Jaroong (Aw)
Email:
info@baanpronphateep.com