Good thing about ibis Budget Singapore Crystal is that eventhough it is sitting at the outskirt of Singpore central, but there are bus routes and MRT near by which take you directly to the centre. You are staying at one of the most popular street for food, so you won't go hungry. Beverages (soft drink, water, etc.) are also quite cheap, comparing to other tourist areas.
One thing that traveller should be mindful of is that this ibis is located right the centre of the most busy red light district in Singapore, which you can see "business" happening after dark. However, the business is not public but behind those red light houses.