The house is on the top floor. There is a lift but you still have to walk up a flight of stairs to the apartment. Just a side note for people with mobility issues. The apartment was clean and had all the amenities we needed. We stayed in the summer so the aircon was great to have. It's not that strong in the rooms so it would have been better if there was a fan. The apartment is also almost 20 mins walk to Termini station but it isn't that tough even with luggage. Overall, really enjoyed our stay in Rome.