I went for a conference and had a very busy week. With that, plus conference socials, plus visiting the city, I barely spent any time at the place but the time I spent was good and I appreciate that I never had a problem no matter the time I left or came back to the place.
Just a note to whoever books in the future: Despite the most convenient way of moving from there to the center and back is the bus number 30, since it stops in front of the place, it's also the most unreliable of all the other options. Your best options would be the metro and the buses that drop you off around the metro station.
There is also a train station very close to there (3-5 mins) that could get you to/from the airport in around 30 minutes, with no changes, and for example to Vatican city within 10 minutes.
Also, thanks to Vittoria who checked me in despite my late arrival due to flight delays.