Hi, Ive not stayed at Maritima but have visited there as they are part of my home group. Check their website at
www.resort-solutions.co.uk/maritimaThey are only one road back from the beach and a short walk from the main bars shops etc. It is a longer but still easy walk to the old town area. The resort also has a good dive shop.
I dont know what has been completed in the town this year, but it may still be under construction on the sea front. Last year the fireworks were cancelled on new years eve . There is also a lot of new build on the inland side of 'Carmen'
Its worth checking out the Lanzarote forum for up to date local info.
Weve been there for Xmas for a few years so if you have any specific Qs, do ask.