Yes, River Ash Bakery is a legitimate business based in Singapore. It specializes in trending cakes and has a physical address at 183 Jalan Pelikat, Hougang 537643. The bakery has a high rating of 4.8 out of 5, based on 116 reviews. However, there was a complaint about a discrepancy between the delivery time stated on the website and the actual delivery time. As always, it's recommended to check the most recent reviews for the most accurate information. Please note that this information might change over time.