Sebastian's place was great. We absolutely loved the location; it was a block away from the Colosseum, including it's metro stop and taxi stands and a useful tram stop. This was, for us, the biggest draw. Coming home every evening and getting to see the Forum and the Colosseum was a real treat.
The apartment itself was well equipped, clean, and modern. There were a few essentials like salt and pepper, olive oil, some tea and coffee, and other small things that you really appreciate from an airBnB host. Not havcing to go out and buy oil to cook; that's a bigger deal than you think. The beds and pillows were comfortable, and the space was perfectly fine for two couples.
Their was a supermarket a 100 feet away, and a 24/7 smaller supermarket maybe 500 feet away. There were also some good restaurants in the area as well. Oh, and the apartment had an elevator! Being on the 4th floor, that's a pretty big win in Europe.
Communication and check-in/out was a breeze; we would absolutely stay here again if we were back in Rome.