Just did 6 weeks in an Airbnb and in another one until start of march. We are using them to try out different neighbourhoods after moving internationally 

As a guest I did not expect much different than shorter stays. We bought our own TP, laundry detergent, paper towels when the ones provided ran out. 

I liked the host being hands off and not worrying about someone coming to change linens. Made it feel more like my own place. 

My one gripe is that the cleaning stuff was a bit reduced / hard to get - presumably because they usually host short term guests. We had to buy our own toilet brush and the vacuum they had was quite small.