The apartment was amazing! We had everything we needed and the AC was an absolute highlight. The location was amazing, if you have no problem with walking, the colosseum was about 10 minutes, the Spanish Steps and Via del Corso about 20 minutes walking distance and we walked everywhere. The host was super nice, responded quickly and gave us tips about supermarkets, bars, restaurants etc.
We only had two cons:
When we arrived, there were long black hair on the bathroom floor. I have blonde short hair and my boyfriend has short red hair, so it couldn't be from us.
And the bigger con was, that there is a bar right beneath the bedroom window. If you have a hard time falling asleep when it's loud, definitely take some ear plugs with you! I had a hard time falling asleep every night even though I was completely done for the day. So it's not really a problem, just something I wish I had known