Fabio and Anna's apartment in Trastevere is great. I stayed for 2 days and worked remotely from the apartment while visiting Rome. The wifi worked perfectly, and the apartment is large enough that I felt total separation between the living room (my office ;)) and the bedroom. The communication was remarkable -- as soon as I had a query Fabio and Anna responded within seconds, always available and very warm, making sure my experience was excellent.
And, of course, the neighbourhood is fabulous. Within walking distance, I found the best tagliere (charcuterie board), best gelato, and fantastic baked goods. The area is very safe and very close to the river - an 8 min walk to Antico Forno Roscioli, for example.