Our family of 7 stayed at Casa Nautilus the week of Jan 4-11, 2020. The house was pretty much as advertised, and we had absolutely no issues with there being any surprises that deviated from the VRBO description.
The highlight of this place is the location, cliff side with panoramic views off all four balconies. People should be aware that the positioning of the house limits sunlight to the pool area, and that you can only really get sun from the top level deck if that is important to you.
The staff was great, they treated us well, and were not intrusive at all.
It was really amazing to see whales breaching right from the balcony, and a stingray swim right by the rocks below us. I would recommend this house to anyone interested in being outside of Puerto Vallarta.