My husband and two teenagers visited Rome from Canada for 7 days in July.
The apartment was fantastic. It was spread out on three floors. The basement bed was extremely comfortable (where my husband slept). Our son slept on the couch on the main floor and our daughter had the room upstairs. The upstairs has no AC (so it was pretty hot) but the other floors had AC. Each floor had its own bathroom which was great when getting ready with teenagers. The house was well stocked and the wifi worked great. The only minor inconvenience was that the shower was very small.
The house is located between Rome and a Beach (Lido). It was a 15 ish min walk to the train station, but included a steep hill. All trips into Rome involved a train and then the B line subway. Depending on the attraction in Rome, you sometimes have to use the A subway too. It took between 40 to 60 mins to get there by public transportation. Be careful on the subway though as my husband had his wallet stolen from his from pocket (the subways were sometimes very busy).
They went to the beach one evening (same train line) when it wasn’t quite as hot and it was fantastic.
The host was very good and checked in on them during the trip (through the app).
This was a great house and they would stay there again.