Hi Simon,
I represent Murcia Villas and as an agent we would be able to help with both your sale on Mar Menor and your purchase on Hacienda del Alamo (which is the resort I cover).
As to which phase you would like to buy on it really is a matter of personal choice as each phase has different pros and cons.
Are you over in Spain at the moment? please feel free to drop me a line and I can let you know what's available in more detail.
Regards
Tom Stevenson
www.murciavillashda.com
tom.stevenson@murciavillas.com
+44 7515376358