Where's best to live

This really depends on their circumstances and what they want to get out of it. Do they speak Spanish and/or need to work? Do they drive? How long are they looking to stay for? Very generally speaking, resorts north of Torrevieja are smaller, quieter and more Spanish.

Hi , in the winter, spring, autumn months guardamar is very quiet. Can feel like a ghost town. Only at summer when you cannot move.  I would suggest a better area being Quesada, more holiday makers all year round, plus not far from other places.

I love living in Quesada and it is not just a 'Brit' urbanisation.  Our neighbours are mostly Dutch, Norwegian and Flemish. I agree you may not hear the Spanish Language but we are within walking distance of Rojales, a lovely town where you will find mainly Spanish speaking people.  I love walking along the river in the warm evenings where you will find the Spanish sitting out and playing dominoes etc.  There are also many bars and restaurants both English and Spanish in the area.    Quesada town has many bars and restaurants so you really have the best of both worlds.  It is an all year round location and it takes us 15 mins to get to the sea. It may not be everyone's cup of tea - but where is!

Torrevieja is a big place and each area within it is very different.

I have a place in the centre of Torrevieja town which suites me fine.  Walking distance to the beach, plenty of bars and nightlife within walking distance if I or younger people want it. 

There is a street in Torrevieja full of bars which they call 'Bar Street' for the youngsters plus Marina Nikki and the clubs out bu the port http://marinaniki.com/en/. All of these get lively after 11/12 at night.

If you want more night life and want to be amongst Brits then the urbanisations of  Playa Flamenca, Cabo Roig and La Zenia have a lot of bars and nightlife but can be quiet in low season. They are areas where people come and go with second homes whereas Torrevieja town is more Spanish and permanent residents and is therefore busy most of the year.

This link might help https://www.spainmadesimple.com/costa-blanca/cabo-roig/

Most expats living around this area are over 60’s so if they want to mix with people of their own age I would suggest speaking Spanish. As for living in Guardamar I think it’s a fantastic place to live whatever your age, but I am biased. 

Have you thought about Gran Alacant?  Near to airport and plenty of young Spanish/Brits if you look for them.

One of the nicest towns on the coast, and I don’t live there!

Big enough to have everything you need but not overwhelming, and has a real quality feel about it. Very Spanish which I guess is kinda the point, but English is widely spoken so they would not feel isolated.

It would be my choice if my son wanted to live out there.

"One of the nicest towns on the coast, and I don’t live there!"

Do you mean Gran Alacant or Guardamar?

Guardamar.