Hi Rima, A budget trip to KL is pretty much possible. From not so expensive places to stay to cheap places to eat you will find it all. Staying around the China Town area will help as a lot of cheap places to eat are around there. You could also look at the main bus station as an option lots of options there too. Having said that, depending on the budget you could even look at staying in the nicer parts close to the twin towers / Bukit Bintang Road as that is also reasonable.