My partner and I stayed at St Peter Stay for 4 nights in February 2020 - a large comfortable, smoking permitted, 1 bedroomed basement flat with entrance facing a secure communal courtyard, very near the entrance to Vatican Museums.
There were many positives about this accommodation. One particular highlight for us was the location. It is away from the very touristic centre of Rome, so there was good local restaurants and bars nearby to get quality, genuine food, that offer good value for money (not cheap - but good for the price you pay). However, the city is a 15 minute walk away, so you are close enough to walk everywhere during your visit to Rome.
Matteo and his friends were excellent hosts - and quickly sorted a problem with the heating and hot water, which were not functioning on arrival. We were met on arrival by one of Matteo's friends, and he was very kind in welcoming us to the apartment. I think a good suggestion to Matteo is that whoever greets the guests has a quick check of the facilities to make sure everything is working - and the basics such as shampoo are stocked.
Thanks Matteo! I wish you the all the best in the future :)