Laura's place is a great find, and can be a perfect place for the right traveler. The location is amazing (you could literally throw a tennis ball into the top window of the pantheon from the apt window), it is impeccably clean, and has lots of artistic charm. As the listing states, it really only sleeps 2 people, so you need to be traveling alone or with someone close to you to share the bed, and you must be in good enough shape to carry your luggage up to the 4th floor. It may not be the right place for someone who plans to spend a lot of time in the apartment (it's more of a studio and so doesn't really have a living room/couch area to just sit and relax), but when you're staying in that area, it's much better to relax in a cafe or bar along side the pantheon!
Had a great experience, and would highly recommend it to someone looking for a very clean and perfectly located studio.