I almost didn't buy this product as I couldn't find any information whether the light can be switched off as this wasn't a feature I wanted to use in my office. The good news is that it can, which allows it keep its clean professional look.
When first using the product, I filled the water to the maximum level (500ml) and was disappointed by the slow flow. However, as soon as the water level dropped to around 400ml, the flow dramatically increased and I am now happy with the product - I just won't fill it beyond 400ml.
I recommend this product for use in a small office or bedroom.