Hello, we have a property in Al Andalus Hills (just down the Hill from Thalassa) and we completed July 2006. We went out to 'snag' at Keymare's request and it was a waste of time as the site foreman had not completed our block. It didn't help that I was on crutches . . . but we have had more luck 'viewing' by turning up unannounced and just walking onto the site. If challenged, you can only leave and then turn up at the office so you won't have lost anything. We rent our apartment so pm me if you are interested in staying during your next visit.
Regarding mortgages, we found Rose Financial Services in Mojacar good but you could do it yourself via the Halifax in the UK if you want to avoid broker fees. Their rates are very good, you can transfer £ to E for free via a UK Halifax and a Banco Halifax Hispania (not competitive for large amounts - use Currency Direct - , but good for 'service' type charges). Keymare will offer you the option to subrogate, ie take over their mortgage and your solicitor will tell you about whether that is a good deal. Incidentally, Spanish solicitors do so much more than UK ones. They are v good financial advisors and will organise the mortgage for you, as well as help with inheritance and other tax planning. A subrogation seems to not be too strict on means testing so you are relying on rental income to some extent, this might be the one for you as Spain don't seem to do 'buy to let' mortgages yet.
I am sure you will be delighted with your purchase. Despite a number of issues on AA Hills, we have fortunately (and fingers crossed) been lucky and are really enjoying our property.