Casa2 Stays, which owns online budget hotel chain FabHotels, is in the process of raising an additional $5.5 million in an ongoing Series B round from existing investors Goldman Sachs, venture capital firms Accel and RB Investments. So far, the company has raised nearly $35 million in the Series B round -- $7.9 million from Goldman Sachs, Accel and Qualcomm Ventures, and another $25 million from Goldman Sachs and Accel. In December, Accel alone had infused nearly $2 million in FabHotels in the Series B round.