My wife and I and our four "adult" children just returned from a week at Casa Rosa on beautiful Tankah Bay immediately north of Tulum. This property was precisely right for our group and "as advertised" in every respect.
The house is generously sized with 4 ample bedrooms - two "master" suites (one down; one up) and two nicely appointed secondary bedrooms on the first floor. The kitchen is huge and well-equipped. The living area is comfortable. The house offers all the comforts of home. The air conditioning works very well - important for a trip like ours in August. The oceanfront terraces and decks are wonderful for relaxing during the day or in the evening. The pool is great for a quick dip to cool off or simply relax. The setting in a small grove of coconut palms with hammocks strung between a couple is idyllic in every way.
The staff is wonderful. Bernardino is the groundskeeper and general all-around go-to-guy for whatever you need - including a refreshing coconut drink right out of the nut he's pulled off one of the trees on the beach. Maria does a great job keeping things inside and out spotless and fresh towels in the bathrooms (there are 3 - with plenty of hot water). We didn't get a chance to sample one of Maria's meals (we understand they're wonderful) because we found too many great places in Tulum to eat, but we arrived to find a big batch of freshly made guacamole and Pico de Gallo in the frig along with a bag of chips - all very welcome since we didn't arrive to the house until 8:00 PM on our day or arrival (we asked her to repeat the guacamole, which she did to perfection). From sundown to sunrise, Noel patrols the grounds, keeping an eye out for security and for any nesting or hatching sea turtles (and making really cute crafts from palm fronds).
Being there in August, we had the possibility of seeing turtles nest or hatch. The hatching usually occurs during the dead of night. When we arrived, we found the beach in front of the house and north and south literally covered with turtle nesting spots (each carefully marked and dated). Amazingly, two of those nests right in front of Casa Rosa hatched in the early evening while it was still light and we witnessed the most amazing spectacle of literally hundred of little turtles (200 +/- per next) coming up out of the sand and heading straight to the water. We've never seen anything like it before and will never forget it.
In short, I can't recommend Casa Rosa more highly.