Booked the " best room in the house" for 4 nights, received a confirmation email directly from the owner. When we arrived, no rooms available at all including ours. We showed the confirmation email to the owner John.
Long story what happened next....Ann ultimately helped us find a room....20 minutes out of town, rough road, no kitchen. They did pay the difference, but....the owner never apologized...not even once!! including follow up emails and never offered any compensation...we asked for some free nights at a future date...nothing...basically just the finger. Do not patronize this person.
Also note that unlike any other hotel we have used, his prices are cash only....they will add 6% if you use a credit card.
We don't write complaints as we're very forgiving....mistakes get made. But this fellow was horrible and rude in how he handled the situation.
Zero out of 10. Pick a different place.

We loved Cabina #2 - right on the swimmable water, with a lovely, large outdoor kitchen and sitting area. Comfy beds and welcome air condo. Annie and Gabi were super helpful at the front desk (perfect English), arranging tours and recommending restaurants. We used the free kayaks to tour the mangroves, and walked to the pier to meet the boat for the Sirena park tour. Iguana's liked it too!

Stayed one night in between lodges in Osa.

Big room and comfortable bed, nice large outdoor terrace. AC and Fan worked well. Central location in Puerto Jimenez, walkable to restaurants and services.

We did not use the kitchen facilities in the room as we were there only one night (ate at restaurants for dinner and breakfast)
We did not use the pool, but it is a nice little area and there is a terrace near the water.