best thing is to ask the seller (to find out their honesty)!
standard tiles for 1222 is 13" x 13" - glossy white with greyish pattern mark.
tiles problem are mostly in hall and kitchen area.
there are more sand than cement. you can know by knocking on the tiles.
it sound hollow on certain area, not solid.
some owner only do patch work on crack area, probably because of low fund.
to buy a unit, you can contra with the owner on the tiles.

use to have that problem few years back, but now for my case, no more.
after knowing of white ants, i bought the termite killer, and spray all over the wooden area,
especially the door frame, and panel floor frame surrounding the wall.
also spray outside the water meter area, exit area and the rubbish dump area.
do it every 6 months then. that was  almost 2 years ago. now, no problemo.
another possibilities for their disappearance could be, the new condos being built facing the highway
could have totally wipe out their homeland.

anyway, the management too did some spray then.
it affected in all blocks. all depend on luck!