The location is absolutely top. We didn't have to take the bus once.
We were warmly welcomed even though we arrived at 1:00 in the night. It's not a given that you can check into a hotel or Airbnb flat at night in Rome. But you can here! However it costs an extra fee, what was described perfectly correctly in the Airbnb ad. Previously I had had bad experiences in Rome with other apartments: even if you select "self-checkin", the hosts in Rome only liked to do the check-in in person.
We were here in February. The heating worked well. I recommend other guests to set the air conditioning to heating mode. Then it is cosy and warm in no time. Another commenter described that water was constantly leaking in the bidet area. Our experience was that this only happens if you don't close the shower curtain very carefully. The shower head is a bit loose but clean. The only actual problem seems to me to be the electrics. If you turn on two heavy consumers at the same time, the fuse can blow.