We cannot say enough amazing things about this apartment and Maria Christina! She was so accommodating right from the beginning, making room for us to drop our bags off before check in time so we didn't have to lug them around the city. The apartment is clean, quiet, has AMAZING air conditioning (which is essential on hot, Roman days), and dozens and dozens of amenities. She's thought of everything, from travel kits to coffee and tea to chilled water in the fridge for you at arrival.
The apartment is about 600 meters or so from the Pyramide metro stop and was easily walkable. It's just up one flight of stairs so you don't have to worry about dragging your things up for miles. But our favorite part of the location was access to incredible food. On the corner, across from a delightful piazza, is a market called Foodie that makes fantastic, healthy juices and meals and has beautiful produce. Then, about four doors down is Alice's Pizza which might be responsible for a 10 pound weight gain when I return home. It's that good, and totally worth it. A few doors from Alice's is Panna & Co Gelateria, which makes some of the best gelato I've had in Italy.
The location is fantastic, the host is the best and the apartment itself is hard to leave for the day because it's just that nice and homey. We'll be back for sure!