I have two houses for rent in Ilhabela, in a closed condominio with reception, security, cleaning staff and a nice swimming pool. The houses are 100m2 big and have two "suites" (bedrooms with bathroom). Two more people can sleep on mattresses in the living room. The house is new and nicely decorated, which is a differential from many other beach houses for rent. It is surrounded by the tropical forest of Ilhabela and you can frequently see tucanos, papagaios flying almost over your head.
The houses are near the Curral beach in the south of the island.
The going rate in the summer is R$ Protected content night and per adult, all included (cleaning as well). In January and on holiday-weekends, higher prices may apply. For stays of more than four days, a discount applies.
You can find more information in this link: Protected content
If you are interested, just send me an email to Protected content
All people who have rented it so far loved the place and many are renting it again.