Salvatore’s place is very conveniently located right next to Roma Termini train station. If you landed at Vinci–Fiumicino Airport (FCO) the airport’s metro station can drop you off at Termini station, which then is a 5 minute walk from his house where you will be staying. If you plan on walking everywhere like I decided too, the Colosseum is only about a 30 minute walk, while a walk to Vatican City will probably be an hour and a half since you will probably stop for scenic pictures on the way passing by the beautiful River Tiber. The Trevi Fountain is also a 30 minute walk at which then you can stop by the Pantheon.
For the apartment, you get your own private restroom. The bed was spacious and very comfortable after walking and site seeing the whole day and two people could comfortably sleep in it no problem. There was AC and a heater in the room which you could adjust to your liking. Another thing I liked was that you could use the fridge and store your drinks and food in it as long as you labeled what was yours. Overall it was great staying at his place and I highly recommend it!