TLDR: wouldn't recommend this host.
Apartments interior design is nice and minimalistic, place is spacious and Rome's historical-touristy district is just minutes of walking away.
However... I found host to be shockingly uncompromising in a pretty basic case: I made a mistake of not specifying that I will need bed sets for both sleeping places (totally my fault, should've read house rules more carefully), but when I asked for additional covers after I've arrived to the place and got a reply "It is not possible". It was IMPOSSIBLE to bring a second bed sheets in any of 3 days I stayed at this place?
Needless to say that I did not like the idea that any random apartment problems capable of ruining my stay at Rome would not be solved in a timely manner. Again... I was told it was IMPOSSIBLE to get a second set of bedsheets. So what if I would have needed a plumber or some other basic thing to be handled?
Also, living room window was open and is very-very high. Meaning that you would need a huge ladder to close it. Or maybe learn to hover I guess... but since ladders are harder to transport than a bed sheet... you know. Will probably have to deal with this situation yourself. I was lucky enough to visit this place in warm November.