The building that I studied is located in Via Innocenzo X in Rome.
All the buildings of the area have about 5/6 floor and their distance is about 10/12 meters. (Pic. 1)
In the second image we can see the north and in the third one I evidence the internal disposition.
So it's expectable in the early morning that the sun will light the upper floor, then around the noon the sunlight hits the window of the Bedrooms.
In the afternoon we can see the sunlight in the Living room. I think that the Architect of this building did a lot of study about the sun and the shadow,
in particular, close to this building there is Villa Pamphili and there are many threes visible by the windows of the living room; at the sunset we can see the sun
between this threes and villa pamphili looks like it is on fire.
The photo (i had some difficults in taking nice photos) explain this condition:
the bedroom side at 12:00 of 16/03 receives sun except some windows but in general there is a lot of sunlight (Pic. 4), the living room side doens't receive
direct light from the sun untill 14:30. (Pic. 5).
Due to the difficult in taking enough photos, after setting the correct disposition (Pic. 6), i did different render at 8:00, 10:00, 12:00, 14:00, 16:00, 18:00
(Pic. 7-8-9-10-11-12) that show that my consideration is right.