Small casual room with an upscale cave like atmosphere; as you might expect.
Good service; decent wine list, good food - not inspired in nature, but well executed.
Portions are quite small by any tapas standard. Not a particularly big eater, but if you think about what you need to order to feel reasonably satisfied the price of your meal quickly shoots up to a range where you could for the same price go to a more upscale restaurant and leave more satisfied.
So although the food is good, if I compare to comparably priced alternatives I would rate La Cave below average.