Getting to Marseillan is easy with flights to the airports below or travel by fast train or car.
Nearest airport Beziers : Flights into Beziers (20 minutes drive from Marseillan) are from Luton, Manchester, Edinburgh, Bristol , Stansted and more depending on time of year, always check.
Flights into Montpeller (45 minutes from Marseillan) are from Gatwick (depending on time of year)
Flights into Carcassonne (70 minutes from Marseillan) are from Stansted, East Midlands, Dublin, Cork, Glasgow and Manchester (depending on time of year always check)
Flights into Nimes (55 minutes from Marseillan) are from Stansted, Liverpool and Manchester (depending on time of year always check)
Perpignan and even Gerona in Spain is also possible just a little further to drive.
There are regular flights into the above airports and from Germany, Sweden, Paris and more.
Trains run from St. Pancras in London run regularly to Montpellier, Sete and Agde via TGV
Driving - many people drive from a french port such as Calais - it takes around 10 hours and of course a stop on the way is pleasant way to start your holiday
Don't hesitate to contact me the owner email@example.com if you have any questions re travel and the location itself.