Thank you Gary, you are right is not too far, I really measure 6-7 minutes walking from the house to the back side of the Dome, but may be I am too faster. and may be you made a longer path, the fastest is passing from San Marco (3-5 minuets, first street on the left), than (Via Cavour, first street on the right, 4-5).
Thank you Aexandru, I appreciate very much your refernces, I am very sorry for that noise in the morning, in reality the glasses of all the windows is a "visarm glass" used normally in Italy against noise and it'squite thick. I think that morning there was something extraordinary of the public cleaning service, I am going to take information from the Muncipality who must have have care of the Florence historical center that is all Unesco Patrimony. Thank you and above all Arrivederci! Gianluigi