Hi Debbie
Like I mentioned in the welcome thread, we actually live in Manilva.
We really like it here, it's a great location. Unfortunately due to the corruption over the years there are many areas that need sorting but the new party that's taken over now seem to be making some headway into getting things sorted...let's hope they keep the momentum going.
Regarding long term rentals, have a look at Barrington Holidays who do a lot of rentals in the area.
www.barringtonholidays.com
Also take a look at the long term rentals listed by our members here:
http://www.eyeonspain.com/rental-property-spain-long.aspx
Hope that helps a bit!
Justin