We stayed at the Marengo beach house for over a week during January and basked in the beautiful views from everywhere in the house. The main living area is very spacious with several couches and outdoors includes many various patios and terraces. It was also a short (but steep) walk down to the beach where you could see many different types of rock formations.
Our group of 9 stayed fairly comfortably in the house but note there is also only one central bathroom (split between toilet and shower/sink) for 4 of the 5 bedrooms. In addition, the upstairs single bedrooms is mostly an office and has open air window cutouts to the main living area, meaning it wasn't particularly quiet or private as a bedroom. A set of shades to block light/sound would have been much appreciated by our guest using that room.
The house has limited heating capacity and most of the windows don't fully seal. The Ocean Road tends towards cooler weather, so make sure you pack some warm clothes even in summer!