The best restaurants serving Mexican food in Hertford Castle East Hertfordshire East of England

Booked a table for 5 at half 7 on Friday night. Got there and the restaurant was closed. Had to then wander round Hertford trying to find another restaurant that wasn't fully booked and was taking walk-ins. Had no contact info as their website is under construction, and the opening hours on Google are wrong. Not sure if restaurant has closed down or has been taken over, but probably shouldn't be taking bookings through OpenTable if you aren't open.