The apartment is fantastic. Recently refurbished, bright and nicely decorated. The kitchen (though we didn’t use it much) was excellent and the bathroom/shower very good. The whole place was very clean. The street-level entrance is not so nice but that, I imagine, has nothing to do with Sonja and it still felt safe enough. The flat itself is very secure.
The location was good for a few days visiting the city. It is about 5 mins walk (max) from St Peter’s and only a little further to the Vatican museum entrance. Although this is at the opposite end of the city to the ancient ruins etc, at least a third of the main sights are on your door step! Public transport overall in the city isn’t great, but from the apartment we were able to walk (about 20/25 mins) to Trastevere for great food! Plenty of food/cafes/bars in the area around the apartment too.
A Nespresso coffee machine (with some pods), a complimentary bottle of wine, some pasta and fruit were great touches, as was the TV equipped with Netflix!
I would highly recommend staying there, and Sonja was very easy to contact throughout.