Amens apartment is great.
Firstly, it is very close to termini. We didn't expect it as on a map everything in Rome looks very far, but a 15 minute walk to the termini and you can be at any major attractions within 10 minutes.
The apartment is very stylish and warm. It has a big lounge and its in a nice area. Only recommendation is buy food near termini then walk to the apartment as we didn't spot lots of supermarkets other than a carrefour 10 minutes away in a bit of a dodgy area.
I'd definitely recommend the apartment.