Here is a list of places for drinks during the day
Mekong Riverview Hotel
The Mekong Riverviewview Hotel has a outdoor cafe / restaurant on the top of the peninsular, providing a great view of the spot where the Nam Khan river merges into the Mekong. It is a more of an upscale cafe, and the prices are higher. But for a view and the good ice coffee and juice it is a nice place to visit. The food looks nice as well. Apparently you can get good dinner here as well. But for me it is a great place for a little break during the day or for an afternoon coffee.