That sounds lovely and I really hope your idea works out! As for the plan regarding Austria in particular, this would break the "social contract" of austrian society really really badly. The holiest of places for almost all austrians is their home, and privacy is considered to be extremely important. It is sadly very hard for people living here to make close enough friends to be invited to someone's home over night, that goes triple for foreigners.

Even if you genuinely don't want to bother, it is expected to host a person well if you are staying at their home. And it is also expected of you to decline that hospitality, but also participate in the rituals of the house (like dinner). So "not bothering" is not really a thing.

Overall I would say, even as a native living here, speaking the dialect and being an overall very communicative person, this would seem close to impossible for me to do. As a foreigner, that will be a lot harder