Guava Lamp is not quite as loud or as much of a scene as the bigger clubs, and the interior (comfy leather booths and a long bar) is more conducive to conversation. The draw here is the well-crafted cocktails (try the Shaddock Sour, with Nicaraguan rum, charred grapefruit, key lime, and rosemary) and delish bar victuals.
Anvil Bar & Refuge: A dark, hipster-hallowed bar and 'refuge' along Westheimer Road in Montrose, Anvil rakes in a lot of bearded dudes and dressed-down dames (some gay, most straight, but everybody's quite welcome).