Above Riva is the latest shop-house boutique hotel in Tha Tien, the neighborhood opposite Wat Arun. Head up to its rooftop—stairs only—and you’ll find an alfresco terrace where practically every table gets prime river views. Dishes add a Thai touch to Western classics, from light bites like deep-fried calamari served with a salted egg yolk and shrimp roe sauce (B325), to a take on osso bucco (braised veal) in massaman curry (B720).