Ilaria's place is a perfect spot to stay whilst in Rome!
First of all, the Trastevere is where you will want to stay while in Rome. It is simply not as touristy as the main center while also being only 15 mins away by feet. It might seem sleepy during the day but at night the location comes alive with bars, restaurants, and outdoor dancing. It also contains some of the best (and cheapest) food that we ate while in Rome.
The place is great as well. It's basically one large studio with giant ceilings (and superb/very Italian artwork on the ceilings!) and a big comfy bed. I believe it is King Size which is great. The bathroom has clearly been recently renovated and is therefore modern. The kitchen has pretty much everything you will need although we only used the fridge and did not cook. The internet is super super fast (I did a Speedtest and it's 300mbps+ upload/download). It is across from a school but I rather enjoyed hearing the kids, your mileage on that may vary.
Would definitely rent here again in the future!