Martina and Walter are amazing people and their BnB is fantastic. Walter picked me up from the airport and we had a nice chat in the car. Their BnB is run very professionally and everything was nice and clean. They gave me tips on things to visit on my first day and I was able to walk to the underground crypts and also to Eataly, which is a huge grocery store that also features really good restaurants. Their place is also located within walking distance of the Garbatella train station which is only a few stops away from the Colosseum and the Vatican museums. Thanks again, Martina and Walter!