PLUS :
Scaleo25 guesthouse is very nice and clean and provides everything one needs for a pleasent stay.
Simone treated us as kindly like his own family, when and what ever we needed something, always very soon and very engaged.
The bed is comfortable, bathroom and shower equipped with everything.
Fridge, gas-cooker, microwave and accessoires, everything is there.
Even coffee, tea and hot chocolade.
Wireless Lan is fast and stable.
Pictures show the inside of the flat quite exactly.
Foodstores, bars and restaurants, even a petrol-station in close vicinity .
Best Traffic Connection on to every of the places of Rome by bus, tram and to main-line railway.
With 20 minute footwalk is Termini reachable ; important in case of a very late / early arrival / departure and independance concerning means of transport from / to Termini.

MINUS :
Some things are not described, but important to know, as this hardly can be changed :
A) The flat is parterre and the two big windows are pointing to the back of the house, so one doesn't hear TOO much of the busy street ( cars, buses, trams ) , BUT :
This is the parking place of (just) the tenants (even for us, if needed ) , which means : cars directly in front of both windows.
B) Entrance to the flat is near to the entrance door of the 3 floor - house , which always closes with a big BANG, whenever a tenant comes or leaves . This is an issue, because there is no additional door in the flat exept the door of the bath. So, you hear this always very clearly, even in bed.
C) Above the bed, there seems to be the flushing and hot water supply for (at least) the tenants who living above, which makes noises, every time when it is used, between 2 or 3 times a hour to 2 times a MINUTE, even during the late night.
D) The wall at the bed is the back of a Hot Dog - Paninotega , the whole night open , the cleaning finished between 7and 9 o clock in the morning.
Although the wall is massive, the voices and partly music are very clear to hear. Because there is a discotheque on the other side of the street ( very well frequented during the weekend), leading to large and slightly drunken (peaceful, but celebrating) young crowds on fridays and saturdays from about 10 in the evening until 7 am , directly in front of the Tür of the house and in the Paninoteca.

We could ONLY sleep with the help of earplugs.
As this flat was described as quiet; even with much of good-will, this is NOT the case !

If you are in Rome to party, coming home , going to bed, falling into delirium, getting up about noon, having privat breakfast or later lunch / dinner, this is the best place for you !