We have a rumour

Apparently, right, apparently there is a house high on Stackpool Road where the basement gets flooded at high tide causing a 'vortex' of water to swirl around down there until the waters recede. Is this true, we must ask. Is it an old wives' tale? Is it a tale told by an estate agent to sell a house in Hotwells? Is it worth a song? We need facts. We need another old wive.