A nice afternoon out and only 10-12km from the old city. A large man made lake with mountain backdrop and lots of little huts along the edge from which to drink, eat, dangle your feet in to the water etc etc.
Personally I like the ones I've been to in Isaan more, where your hut is actually a raft on a pully system and it's taken out to the middle of the lake.
Best go here on the weekdays and you'll likely have it to yourselves, gets busy with families at the weekends. A nice refreshing place to relax for the afternoon though.
All the usual Thai food. Live baby shrimp swimming in chili and the such.
Nice enough place for a cooling, slightly-drunken swim.
Think the photographer was drunk though.
A nice, close, largely unpublicized retreat from the city.