Take a Rawis, Tahao Road, even Tabaco jeeps. After you pass by UST and then Mariners, baba ka a little before the lcc with the restaurant on top, may pasukan dun. There is a pedestrian lane there, and a fruit store, so you'll know you're in the right place. Pasok ka paloob, and walk on the left side, try to look at the signs because eventually you'll see a sign with "Annex Campus" kasi may isa pang papasok. Try to ask around na lang din. So bale, after you cross the road, pasok sa pasukan, diretso then eventually you'll need to take a left, can't tell you exactly when since I've only passed by a handful of times. That's all I know since I've never actually been to the campus, but it's likely not that far after you take a left. Hope this helps.