The apartment is wonderful !!
It's impeccably kept, and charmingly 'retro' in certain aspects : the kitchen design & tiles are beautiful!
Claudio was extremely helpful and communicative before and during our stay, recommending best routes for arrival, and kindly arranged a taxi transfer to the airport on the day of our departure, which arrived perfectly on time and was the expected price.
Wifi worked extremely well.
The two bedrooms each have their own balcony, and it's very pleasant to sit out on them and sip a coffee or something stronger. Arriving from the fairly busy road you might think it'd be noisy, but the apartment is facing out towards a convent/church and quiet leafy side roads, so it's actually very quiet.
The kitchen is well appointed with large cooker and we managed to self cater on a couple of nights very successfully (family of four) - the kitchen table accommodates four people easily, if a little cosy! There is a dishwasher which appears to function although we didn't get around to trying it out. The washing machine works very well and is situated just off the kitchen in a small utility area that also has a drying rack.
There is air con in each bedroom that works very well indeed. We needed it - it was 38 degrees outside when we were there.
The bathroom is generous, shower perhaps on the small side but nothing to really complain about. The bathroom is off one of the bedrooms so potentially slightly awkward for certain groups of guests, but for a family or couple not a problem at all.
There's a bus stop very very close to the apartment block - frequent buses which take you into central Rome. A metro station (Valle Aurelia) is a 10min walk away - gets you fast to e.g. Flamino or Barberini for Borghese/Trevi/etc
It's possible to walk to the Vatican Museum entrance and also St Peter's from the apartment - takes about 15-20mins. We walked to St Peter's early one morning at 7am (to beat the crowds) and climbed the cupola on top of the Basilica for amazing views across the city - 8 euros/person for stairs, or 10 euros/person for a lift part way.
There's a large supermarket and shopping centre called "AURA" reasonably close by - maybe 10-15 mins walk. Slightly onerous on the way back with heavy bags of shopping, but perfectly doable!
All in all, a lovely place to stay slightly away from the hustle and bustle of central Rome.
We highly recommend it to anyone - and of course it comes with an incredibly helpful host who remains contactable throughout your stay for any questions or problems.