This was my first time in Italy and I must say it was absolutely wonderful. I went on a solo trip for a month as I was able to work remote during this time. The internet was great, apartment had ample space and the roof top was perfect for reading.
Trastevere is the perfect location for a long stay. It is close to all tourist attractions but far enough to not be stuck the in center. It is a very safe area with plenty of restaurant and bar options to chose from.