Andrea has provided everything you will need; this is clean and spacious and the kitchen is really well equipped. You can cook properly here and really enjoy a night or two eating in.
It's a bit of a long way out from the old centre. Transport is good but you'll spend more time travelling, especially if you only use the metros. The trick is to master the buses instead. You can be at the Borghese an hour from leaving the apartment (the coliseum is actually very quick to get to). If you have a smart phone get hold of the app for the ATAC buses and the TrenItalia app. And trains will get you to Trastevere or The Vatican quicker than buses or metros for just a couple of euros.
If you have time to go further afield, a big advantage of living round the corner from the Tiburtina station is that you can be in other cities really quickly - Firenze in 1hr 20 for instance.
The neighborhood bars and pizza restaurants that Andrea recommends are great and the are plenty of shops and a big supermarket. Plus free parking. We really recommend this apartment!