“Leonardo Express” train to Roma Termini Station and bus 913 to Hilton Hotel

From Roma Termini Station to Hilton Hotel: bus 913

Uber
Car2go
Enjoy
Bird
Helbiz
Lime

Romans are very used to sharing stretches of roads in the great city of Rome.

You can therefore use the discussion in the facebook event and ask for a ride https://www.facebook.com/events/722814523128489?ref=newsfeed

This is also a nice way to get to know the people and streets of Rome.