Basic knowledge if you’re Italian, but impressive if you’re not. Kudos.
“Spadellare” the pasta when it’s almost cooked with the hot sauce in a separate pan is the easiest way to make your pasta go from “home grade” to “restaurant grade”.
You absolutely need to stir pasta while it’s cooking. And once you get it out, if you’re not going to add sauce right away or at all, you absolutely need to add some olive oil. If you don’t stir it while it’s cooking, it will get cooked unevenly. If you don’t add olive oil, it will clump up and become basically impossible to eat properly.
Afaik, AirBnB in the US is a huge pile of shit. In Europe most of the times the offering is good and you get more for your money that a typical Hotel. Exceptions exist of course, but on average I would say AirBnB > Hotel.