In case you're interested I JUST returned from 6 nights at the Del Rio and can't say enough good things about it. It definitely is not the resorty type of place to stay, which is exactly what we were looking for, but it was nice, clean and right on the beach at the more "local" end of the Island. We stayed in the Cabana Chica and could literally sit up in bed in the moning and look out the window to an unobstructed view of the water.
It is defintely more for the self serve type of traveller but it comes with a small refrigerator and coffee maker, which is great for mornings, after the breakfast run to the north branch of the La Popular Bakery(1/2 a block away), for sitting on the porch having a nice cup of joe, a croissant watching the local kids play. Kudos to Brooke, Dan and many thanks to Thomas for everything and for being extremely accomodating to our crazy schedule changes. I would definitely recommend where we stayed to anyone. (Unfortunately, didn't see the inside of the other rooms so can't comment on them but will always give a thumbs up to the Cabana Chica!!!!)
If you need anymore info let me know, we had a blast and met some great people(code name Aurthur- to follow), local and travellers, did some awesome dives and will get some pictures going when I get all 300 million of them downloaded and sorted.