Response from Giuseppe:
I thank Margaret, because every criticism can be turned into a good advice. I also want to point out though, that I did my best to arrange their arrival: got in touch seven days ahead, welcome them and left my own written detailed notes of houses rules and restaurants in the area and digital info about neighborhood's points of interest. Unfortunately, this time (unlike all other times) I couldn't spend time with them cause I was asked, quickly away. Also, I believe that is within the airbnb spirit to be hosted in real homes lived by real people (with their own real life). Out of this spirit is strongly suggested to attend only 5 stars perfect neat hotels and enjoy their receptions. I regret to not have met Margaret and her company although I went to visit them (as in the above spirit), but I was left on the house door (well out of the house) by M's friend.
About the cockroaches this is the first time that they show up. I had not seen them before Margaret's staying nor afterward, but I will treasure M's suggestion because I know that being hosted in a clean environment is a holy requirement of the guest, and if the house wasn't in such condition I am truly sorry.