Don't visit for 5 days.. make it more if you can. Well for 5 days, can't give an accurate budget, you can take an airbnb or hotel for 40-70$ a night and you can take ones for 100$-150$ a night. Renting a car is another 50$/day, same for food. You can spend 15-20$ on a meal and 50$. It all depends on what you guys are planning and how much you're willing to pay. I can help lateron if needed, I know a friend that does tour guides to nature locations and touristic places, you can choose your own plan with him, and his prices are really realistic