Hi, I am from Poland and I was in Rome 9-11-th of November 2019 with my boyfriend and his mom and we stayed at SanGiovanniRoomsRoma. The localization was perfect - Colosseum is located just at the end of the street (Piazza di S. Giovanni in Laterano) so it took like less than 15 minutes to get to the Colosseum. The host gave us all instructions how to get to the hostel.
The room was really great, it looked better than I expected. Room was really clean and comfortable. Bathroom was well equiped (everything was like in the advertisement). There was the kitchen outside the room when you can prepare some tosts and coffe and it was very good equiped as well. On the wall in hol there was a great map of the Rome City when you could see every major monuments to see in the city.
The big advantage of this place is the low price compared to the great quality :)
I am really recommending this place and if I will be in Rome someday next time I will definitely stay again in San Giovanni Rooms Roma.