Warning--even though booking.com lists the hotel as air conditioned, you have to be careful. Most of the rooms are not air conditioned and you have to make sure the one you are booking is. This led to the only unpleasantness with staff, the owner I thought was a little tiny bit curt when I insisted I had booked an A/C room in addition to the suite. She was right, I had not been careful enough, but it seemed she was quite accustomed to people thinking they had a/c when they didn't. Our friend had already checked into the non a/c room when we realized it and the owner would not change the room unless we paid for an entire night of another room. It would have taken staff maybe 5 minutes to freshen the non a/c one. One would have thought more graciousness was called for. The hotel was nowhere near full. She is European and I have seen this sort of thing often in Europe. I did not experience it anywhere else in Costa Rica, however.
We had the suite, which overlooked the busy main road and despite the noise deadening windows out to the balcony (which was not really worth having in our opinion--it overlooks the road plus the heat and the mosquitos made it not really usable--but the size and comfort of the suite itself were worth having) --the room is loud. The drapes are sheer and there are more windows opening onto the upstairs deck so darkening the room was impossible. The beds are extremely hard so if you like that you will like them.
Puerto Viejo itself took a little getting used to. It is very Caribbean, with upscale prices a lot of the time but not very upscale anything else. We had the suite, which is a large room with a counter kitchen on one end and it is very large and very clean. The bed linens showed a lot of care in the way they were cleaned and put on the bed. The towels were excellent. The bathroom was just fine, pretty, with enough space. The bathroom door squeaked loudly in the middle of the night. We were able to park with no problem, a HUGE plus in this town with no parking. There is a large outdoor lounge upstairs that is really nice and the downstairs breakfast area is really nice too. Wifi works well enough in the breakfast area, at times was a bit sketchy in the room but I found this in most places in Costa Rica. It was certainly functional and we were working while there (travel business). The food was superb, both the breakfast and drinks we had from the bar. Note: the drinks were expensive-$58 US for 3 cocktails and a beer. They are less elsewhere in town. But again, very well made and it is really a nice experience to just sit under the ceiling fans and enjoy them. The room itself is rustic but fairly upscale rustic. The pool is a small square. We didn't use it, but I saw people sitting on the side with their feet swishing in it, and it looked clean.
The location of this hotel is amazing, right across from the beach and right in the heart of everything. We felt quite safe and it was definitely a great fit with the spirit and feel of the town. The staff was exceptionally lovely except for the one occasion with the owner.