The pool is saltwater and has a nice private location. The pool was definitely our favorite spot of the hotel.
We had the "Family Cabin" room as listed on Expedia. The room was basically as described with one queen and two twins on one level and then another queen on a 2-step raised loft level. The room was not terribly dirty but there were a couple of small spiderwebs and spiders in the corners of the room, and we saw the occasional ant scamper across the floor. The sheets were clean and there was a spare set in a nightstand. The heavy blankets seemed as though it had been quite some time since they'd received a clean. The water was hot and the A/C did work, although it smelled a bit musty and could probably use a cleaning.
When we arrived, we did not see any front desk or reception. After five minutes of looking around I made contact with the owner via the Whatsapp chat listed on their website. He answered and came promptly and gave us our keys and two more towels for our family of 4.
I actually quite liked the location of this hotel. It was still walking distance to everything in Tamarindo, but it was at least a block or two away from the super central, noisy action. There's a "Vindi" grocery store right next door to the hotel as well as a pharmacy.