Flores is looking forward to the match and has said that he knows all about the St. James’ Park faithful.
“Of course the crowd atmosphere will mean we are under high pressure, but it’s very exciting to think about getting a win at the stadium," the Spaniard told Watford’s official website.
Watford are 13th in the Premier League table at the moment with six points from five matches, just four points above the relegation zone.
The Hornets, who got promoted from the Championship at the end of last season, will head into Saturday’s match on the back of a 1-0 victory over Swansea City at Vicarage Road.
Meanwhile, Newcastle currently find themselves at the foot of the league table, having picked up only two points from five games.
The Magpies will head into Saturday’s encounter against Watford on the back of a 2-0 defeat to West Ham United away from home at the Boleyn Ground in London.