Mentawais - resonable accomodation

I will be going on an Indo-trip next year for 6 weeks. I will start out in Bali and see from there, i dont want to be planning too much...
now i just found out, that the flight from Denpasar to Padang is so very cheap, that i am thinking of including a week (or at least some days) on the mentawais into my trip...
checking stuff out, i can only find bungallows and ships that offer accomodation, but i dont feel like paying 2k for 7 days...
does anybody know resonable accomodation on the mentawais? can i go alone there or will i need guiding..?
am an intermediate surfer, surfed head highs so far and get along with green waves just fine...
now i just found out, that the flight from Denpasar to Padang is so very cheap, that i am thinking of including a week (or at least some days) on the mentawais into my trip...
checking stuff out, i can only find bungallows and ships that offer accomodation, but i dont feel like paying 2k for 7 days...
does anybody know resonable accomodation on the mentawais? can i go alone there or will i need guiding..?
am an intermediate surfer, surfed head highs so far and get along with green waves just fine...