the B&B is in Trastevere, Hotel Aberdeen is near Termini station. We will be in Rome (for the first time) for three nights, traveling in and out of Termini, using public transport. Arriving into Rome off of a night train, if that impacts your advice.
The B&B gets rave reviews on the feedback page for the Rome book even though not officially mentioned by Rick; Hotel Aberdeen is a Rick recommendation. They would be two different experiences.
Thoughts on which we should choose? I'm thinking Hotel Aberdeen because we could drop our bags there quickly from the night train and get on our way (we will have showered on the train). However, perhaps the B&B is sooooo great that we shouldn't pass up the experience? Guessing I'd need to take a taxi to get there.