I wanted to book that tent place in Vichayito but it's closed for renovations from May until June.
DCO also looks really nice but they can't accommodate 3 people.
And now the Las Pocitas de Mancora site isn't working. I'm running out of options!
I was able to get the contact information from Google's cache of the Las Pocitas site...
Informes y Reservas Lima:
+ 51 1 998139711 (9am to 6pm)
[email protected]
I guess you could also try Hotelier, Las Arenas or some of the other hotels from that list that I found... I hope you have luck on your search!