I don’t think two sinks are over the top. However, the catchy comment about the so-called countertop space is not unfounded. If the space for two basins is really tight, I would consider just having one sink and having a "washstand" planned. I think that’s a great thing. And again on the subject of two basins. I have 4 siblings, but all brothers. From a certain age on, it’s quite practical to have an extra basin, especially once the first beard hairs start growing. Nobody can brush their teeth that long ^^ Best regards