@Taija2. Is your suite self contained? ie own kitchen, lounge as well as bathroom?
Unless his listing says you get the entire house he is probably within the ABNB rules, however I think if thats the entire description then the host is being dishonest imo. Most shared space hosts would have this information in either the title or the very first line description. There are also areas to note that spaces are shared.
Future ABNB guests may be disappointed once they find out the sharing aspect; some may even cancel. Airbnb is full of share houses, some do it better than others. VRBO via Stayz for example, does not permit shared houses.
Also, check with your rental authorities to see if you have any rights such as quiet enjoyment which depending on the extent of the renovations, may have interrupted. They may also be able to tell you whether his arrangement and his notifications to you are legal or not.