Location, location, location!! This apartment has it! You are only a short walk from any number of classic Roman sites. The area is also bustling with great bars and restaurants. However, it is NOT loud at bedtime, which is nice.
The apartment itself is enough space for two people, but anything more and you'll be cramped. However, my wife and I got by with no problems. The decor is very classic, with wood beams on the ceilings, which we liked.
In short, this is a great apartment in the midst of so much activity in the Eternal City. Would highly recommend!