Wad u said makes sense..but if upper storey of unit 1115 is ok right in term of fengshui? Will tio arrow bo?
Upper units still acceptable since the edge of the MSCP is not pointing into the unit.
But if say T junction, the blk is facing the T Junction, and traffic coming at it, it is still like tio arrow all the time, even if the unit is high. 1115, in terms of sun, is good. If got other unit with similar sun and can siam facing this MSCP, go for it.
In ang mo terms, it is called Negative Energy. Try sitting around a line printer or machines with high electrostatics or magnetic wave and see how it will affect you.
In FS terms, bad idea to have TV in bedroom, likewise ceiling fan.
In scientific terms, too much electronics in Bedroom, may affect your sleep too.
Of course, there are many school of FS. Depends on your FSM too. And also, if the unit is suitable for your bazhi.
Best is able to buy a plot of land according to your bazhi, and build a house accordingly too. But most of the peasants who qualify for HDB units can't do it, next best is choose a unit accordingly.
Again, FS if you believe, we can discuss and share experience more. If you don't, forget about this post. Take it as bull's poo.