The apartment is in a great location.. the Spanish steps are just around the corner and it's a short walk to the Pantheon or Trevi Fountain and if you like shopping it is in the middle of the fashion area.
It's not a big apartment, however, it is well set out with everything you need perhaps you could cook I would find it a little tight on space but great for a snack.
We found the apartment very quiet. The street below is quiet at night so sleeping peacefully was no problem.
I would highly recommend this apartment. The only warning is you should be able to climb 3 flights of steep stairs.