Federico's apartment in Trastevere is large, clean and comfortable. The room has a large window and desk and chair and good Wifi. It is very near Rome city centre (within walking distance) and Testaccio (another lovely neighbourhood). His apartment had all the comforts. There are many cafes, restaurants and supermarkets nearby and pharmacies, etc.
Federico and his flatmate, Giacomo are very nice, friendly guys who know Rome really well. They speak excellent English. They gave me great tips about the city and recommended places to eat. I highly recommend staying with Federico. You won't be disappointed. Many thanks Federico.