Villa Saykham is good value for a guest house stay at $30-35 US per night approx. (Book via hotel website)
It has a good location near the night markets (which is where everyone generally ends up at night) and it is very close to good restaurants like Cafe Toui and the new friends International restaurant Khaiphaen, as well as the Mekong riverfront and Xiang Muane area. Room B1 is a good pick on the ground floor, nearest to the outdoor eating area.
However, possibly a room upstairs would be more private and quieter.
Breakfast is eggs, baguette, fruit, juice and coffee and is included in the price.