@Brent116
Unless your host has a lot of experience with long-term stays or is like me and actually prefers longer stays, most house rules and the way things are set up will probably be more suited to short-terms stays and therefore a separate discussion with the host would be ideal for both you (guests) and the host to manage expecations. Regardless of length of stay, any cancellation by the host will be a huge blow to us, unless the reason falls under extenuating circumstances so I wouldn't worry too much but it's best to be in direct communication with the host to make sure they have no intention of cancelling on you 🙂
I would suggest you contact the host, explain the purpose of your trip, what aspects of the listing were most attractive and why you booked there, and ask questions (if any) about amenities, laundry, mid-stay cleans, trash disposal/collection and about the area/neighborhood. Then about 1 month~2 weeks prior to the actual check in date, follow up to confirm and get detailed check in information. Anyone staying somewhere for longer than 1 month is "living" there, not "visiting" so you will have very different needs than a couple that will be staying for 3 nights.
My listing is tailored to target long-term exchange student guests so if you need ideas about the type of things you need to agree on with the host in advance, please feel free to check out my listing for ideas. Good luck~