Chey.... I thought what solutions.
Going all the way to JB and book into their budget hotel is not convenient right? I think your GF maybe feel that it's "outside of SG" so chances of bumping into friends are less; it's NOT the stares from hotel counters that made her feel like a pros.
Ok la, still have to credit you for sharing spirit.
The transit/hourly rates by budget hotels in SG is actually quite a sizeable market; convenient, cheap, comfort, as-and-when-needed. Except for the stupid registration process (2 IDs needed) and weird stares at counter, it serves the purpose well.
With the removal of such hourly rates services by many hotel due to raids, it seems there's a void to cover this market segment. Whoever can think of a real solution can make some good, on-going serious money man!
One possible solution is to buy one of those Vans and convert the interior to becum super cozy with bed, mini fridge, music, etc. Only lack the use of a shower, but can be solved parking (and fucking) near a public toilet facility e.g. park.