Malaysia Budget Hotels - Tropical GuestHouse (website: http://www.tropicalguesthousekl.com/)
This place is an adorable haven in the midst of a big city. My review here is based on the presidential suite - worth the extra money from what I can see.
Bamboo on the ceiling, scribbled messages of love and positivity on the concrete walls, flowers all over the entrance hallway, just so cute. The owner, Jennifer is a lovely lady who will help with anything you need.
Recommended. There were one or two bugs in the room, but having just arrived from Borneo nothing that would have bothered us.
P.S. Make sure you visit Jalan Alor for food, the Sky Bar at the Traders Hotel for drinks, Changkat Bukit Bintang for dancing and Petaling Street for Shopping!