I stayed for 5 nights at the great little apartment. I was traveling with my 3 year old daughter and it was plenty big enough for us, though it was very small. It has everything we needed plus a lot of extras that were awesome. It’s a very short walk to a great outdoor market, shopping and Vatican City there was a little coffee shop just about 3 steps from the front door so that was amazing. The bathroom is very small but also has everything needed. I am 5ft 10in tall and a bit on the heavy side and the shower was a tight squeeze. But it would be absolutely fine for someone of normal size. :)
In short, I can definitely recommend this apartment and the host as being fantastic!