http://www.tripadvisor.com/Hotel_Review-g298570-d305749-Reviews-Radius_Inn_International-Kuala_Lumpur_Wilayah_Persekutuan.html
radius has a bad name it seems-check the link above.
Its on bukit bintang & not that far from petronas towers.
We always walk there as its more interesting.
The other tower is well worth the visit too.
Petronas you have to be there early a.m. or no go.
There is a large shopping ctr in towers & behind is a lovely garden area to walk or sit in.
There are heaps of shops in sungei wang plaze which is 1 street below bukit bintang from the federal hotel end.
k.L. has a nice bird park & that is just around the corner from the orchid gardens. Monkeys abound around this area, don't have your sunnies etc., on or they will pinch them

Chinatown is also interesting.
cheers
The locals usually ask if u want to go to bat caves, yuk not for me to walk up heaps of steps to see bats!!