Roberta is the best! :) This is our very first time with air b&b and Roberta place is AWESOME! Her apartment is cozy and comfort with lovely decors and everything are well prepared! Especially you can find a "Bible" on the table which have lots of tourist information! Just 5mins walk to the Urgell metro station and 15mins walk to Colosseum! And there are lots of restaurants and small boutiques downstairs! The place is safe and quiet :)
Trust me! Roberta place won't disappoint you! And I will definitely come back again! :)