We spent a comfortable two weeks with our 18 year old daughter and 21 year old son and girlfriend. there was plenty of room and plenty of bed linen/towels. The kitchen and basement (with small gym) was well equipped; the electric barbecue outside was excellent at cooking without burning! Very comfy beds.
The family were very hospitable on our arrival despite our late arrival (le samedi noir) and trusted us to leave the key safely upon our departure.
Great location within short drive to excellent tram into the city - 5 euros for car and ALL passengers. We visited the aquarium, the zoo, botanic gardens, old city, night market, caves, beach, went kayaking... and did a lot of nothing.
Tiny downside: very very hot on the terrace with all that concrete when the sun is full on it. But we wanted sun... however, the air conditioning inside was very efficient. Maybe some way of cooling the little upstairs room? We could not even purchase a fan - everywhere was sold out!
The baker in the nearby suburb was excellent and there is a fabulous range of good supermarkets nearby.
The beach at le Grau du Roi was not pleasant despite its beauty and remoteness - no facilities meant no toilets for all those people and the road there was very very crowded... but Carnon Plage was lovely.
Try to find restaurants with mainly French people eating there; many tourist trap restaurants in the city serve food which is not as good as at home! Avoid main popular locations when choosing.
We would definitely stay here again. Herault is now our favourite region.