The journey there was very cool, fly to San Jose and overnite...next day flight on bush plane to a dirt strip in the jungle, jitney ride thru banana plantations to Sierpe. Contracted a river taxi there to Drake's Bay...seeing crocs on the river banks and the entry to the bay thru the surf were pretty exciting.
The lodge run by the Chavez Bros. (the hardest working humans I've been around) was very rustic, but I like that. Bunk beds and a small dresser were the sole furnishings in our sleeping hut.
Food was plentiful and creative...the open-air jungle bar/dining area was perfect. A pot of excellent coffee was set outside our hut each morning, we sat in hammocks enjoying the java and watched the sun rise over the bay.
All diving was at Cano Island, about an hour boat ride each way, so only two dives per day were made. Altho the marine life was good, there was really only one decent dive site, the alternate sites were pretty tame so we dived El Diablo almost every day.
Mobulas, giant manta, sea snakes, bull sharks, white tips, the usual reef fish. We also saw a humpback whale with calf from the dive boat one day.
We booked 4 days diving, but that was probably one day too many. Side trips to the Corcovado National Park were worthwhile...poison frogs, red macaws, howler monkeys, etc.
Drake's Bay was quite undeveloped when I was there in '99, no roads or cars, but that may have changed by now...I thought it a great destination.