The well-known Sote Club which is located in Hua-Kwang reminds me of the Route 66 club not far away. Both nightclubs are usually packed and they have some of the best house-music in Thailand. Note that the Sote club is also located a short ride away from the MRT Phra Rama 9 Station which makes it very to easy to get to as a tourist or an expat. Ratchadaphisek has some of the best nightlife entertainment in Thailand hands down and Sote is not different.
If you are looking for good music and not expensive where there is a goof vibe then this club is what you are looking for. Its not far from many hotels in the area. See the map and pictures below.