We stayed 10 days in September. Location is close to everything, P. Navona, Campo di Flori, Vatican. Angel bridge are less than10 min walk. Souvenirs, antiques, Marino glass, within 2 blocks. Pizza, Gelato, outdoor cafe's, first class restaurants & groceries also close.
The furniture older but bed was comfortable. Television in multiple languages, Wifi worked well. Terrace is small but nice to have. Kitchenette was a useful option. It had frig, stove, microwave, coffee maker and all the basic dishes/pans needed. We were easily able to make stop back to room in midday to drop of shopping, change for dinner or just get off feet.
Bus and taxi stop just down at corner (bus 64 run from terminal to Vatican every few min) other buses stop every 15 to 20 min. Get bus pass if your staying longer than a few days, your feet will thank you. You can walk to Coliseum, Spanish steps and Trevi, however walking back over cobblestones after dinner was something we didn't want to do. Closest metro and tram lines are in Vatican city, they are just outside of old city center. So when you take them you still will need to walk a few blocks to most sights.