+++ location is very good. It is in the heart of Roma, we therefore don't need to pay for transports.
+++ Frederico is easily reachable and answered our questions.
+++ the size of the apartment is really convenient.
+++ the flat seemed very cleaned when we moved in (cleaned toilets, clean floor, etc.)
--- the toilets were blocked (the flush did not work properly or was not strong enough)
--- the tap in the kitchen is not properly fixed. We therefore had not be careful when using it.
--- the bed was really itchy (maybe the sheets need to be deeply cleaned).
To resume, we had a pleasant stay at Frederico's place. We recommend this place for tourists who are eager to visit Roma. The location is one of the best advantage of this flat.