Wow! Loved this apartment. Really close to Spanish Steps, shopping, grocery store next door, restaurants, bakeries, gelato shops, you name it! Prettier in person. The hosts were great with communication and welcomed us at check in. Felt very comfortable right away.
FYI - Uber is horrible in Rome at the moment, there is a taxi stand at the square at the Spanish steps and you can search in maps for ‘taxi stand’. You can use your chip credit card at the turnstiles for the metro, meaning you can just pay and walk through, good if you don’t need many connections. If you need to buy bus tickets you can buy them in any tabacchi shop.
The streets are blocked with people and restaurant tables during the day so not all cabs/drivers will be able to get you from your door or drop you directly there, just a note that some walking may be needed. Message the host in advance to see if they have recommendations on a driver if you are looking for a transfer.
Overall, this is a wonderful apartment, as others have mentioned bring ear plugs if you are a light sleeper.