Hi! since tight inyo budget.i would rather recomend this must go places in Manila:
1st day:Cultural Center of the Philippines,Manila Baywalk,Rizal/Luneta Park(naa pod dri ang Quirino Grandstand),Intramuros(Naay museum dri,Manila Cathedral<dri ngpaksal c gabi ug Sharon.hehe,St Augustin Chruch>)and Fort Santiago (Kelangan mag start mo sa CCP since walking distance namn lng ang baywalk tapos u will pass by manila yacht club)across baywalk kay malate church.if maabtan mo gabie.balik mo baywalk nice man did2 pag gabie kay dghan motogtog mga banda.
<food and fare ra inyo magas2 ani nga laag>
2nd day:
Baclaran Church(Kris Aquino usually goes here.pro normally gabie xa mo ari.hehe) after that ad2 mo Mall of Asia and lastly ad2 mo Star City(from Mall of Asia sakay lng mo taxi towards Star City medyo dool namn lng).
<ang inyo mgas2 here kay plete2x,food and ang entrance sa star city. if ride all u can mga 450 ata.im not sure though i 4got na kasi.hehe>
3rd day:
Quiapo Church,Binondo/china Town,Divesoria (gituyo nko ni xa nga last place 2 go coz these r the places nga dghan au bara2 mapalit f ganahan mo mg shopping)at least dghan mo souvenirs and pasalubong madala.hehe.<b careful lng jud mo here coz dghan kawatan n snatcher coz its a very crowded place jud>
-FYI::kelangan careful lng jud mo sa manila ky dghan mangingilad n snatcher.careful pod mo sa taxi driver kay mo take advantage na cla especially dli mo taga manila.uban taxi driver bisaya man pro cla pa ang mo ilad nmo.i wud suggst f magsakay mo taxi ayaw cge bisaya pra dli cla kabalo dli mo taga manila.ayaw pod mo pahalata nga dli mo swe2 sa manila pra dli cla mo tke advntge.
-good luck n enjoy ur trip!