My husband and I stayed at Livia's flat for two weeks over the Christmas Holidays. It is very well situated - walking distance to a lot of attractions, eateries & shops. Piazza del Popolo, di Spagna, Barberini, Borghese gardens ( great spot if you are a birder) are all within a 20 min. or less walk. Not as well known but very well worth the visit is the Ara Pacis museum, also close by - highly recommend it.
Unfortunately we did not get to meet Livia as she was at work ( however, her mum was there to meet us when we arrived). Livia was always available though to answer any of our questions promptly which was v. helpful. She arranged for a car service that picked up & dropped us off at the airport ( if you can, ask for a driver by the name of Silvio - he was courteous, prompt & reliable).
Livia's kitchen is stocked with the essentials - plates, bowls, mugs, glasses, Moka pot, cutlery, cooking pans, etc. bedroom & bathroom has extra linens, laundry soap for the washing machine, even shampoo, hairdryer & TP. Loads of closet space. It is a bright & tastefully decorated flat - pretty much what you see in the picture is what you get. We did have a bit of a problem with the WiFi but after Livia's suggestion of moving the modem closer to the window, it was no longer an issue getting on the Net.
Worth mentioning - la Buvette on via Vittoria (great service), Edy Ristorante on vicolo del babuino (great food!), Pompi ( temple of tiramisu - need I say more?) on via Della Croce, Laduree ( to die for macarons, yes it's French, but there are no international boundaries when it comes to good confectioneries) on via Borgognona - all within a few blocks of the flat. Found a great shoe store just a couple stores down from the flat called Bulckaen (#158/A Babuino), friendly & knowledgeable service from Georgia.
Other areas worth seeing - the district of Eur and for excellent non touristy eateries, check out the district of Trastevere.
Do watch out for small bands of gypsy kids who work as a team & are very good & skilled pickpocketers - ( think the artful dodger) usually around the tourist congested spots such as piazzas or Metro stations.
Despite this, Rome is a wonderful city - full of art, history, good food, and lovely people. Having a nice place to stay such as Livia's comfortable flat just adds to one's overall experience.