Aurelia Studio is a really great place to stay in Rome. I spent there 3 weeks and I had a really good time there. Every evening I was coming back home with a real peasure. Apartment is super clean, new and well equiped. It's 15 minutes walking distance from Metro station Cornelia. As you have to walk along quite a busy street, you can also take a bus - but frankly speaking buses are not the most reliable thing in Rome, so it's better to have a walk.
Mark is a great host. He is welcoming, helpful and discreet at the same time. He was able to solve any problem I had.
I definetely recommend this apartment for everyone planning his stay in Rome!