We stayed for two nights and the room was perfect for us.
Enough room to lay our suitcase and be confortable, everything was clean, and the private bathroom was very convenient !
The location was not central but we walked to the city center with absolutely no problem (about 40 minutes). The place is also close to Termini (bus and train station) which is a plus.
The temperature was quite high when we were in Rome so we let the windows open during the night to get some air : the street is a bit busy so if you are sensible to noise it might be something to consider (the noise was really reduced when the windows were closed). There is a also rooftop bar in front of the building that closes late so on the second night we thought why not join the fun ! We went there at around 10pm and it was a lovely evening spent enjoying cocktails, and then you just cross the street to get to your room. Super nice evening for us.
Over all we would definitely recommend the room or book it again !