Amadeu (the host) is very nice and will cook a nice portuguese meal for you. Plus there will be a daily delivery of bread and pastries to your gate. However :
*** We feel that THE DESCRIPTION OF THE VILLA IS QUITE MISLEADING ***
1/ The villa is not on a 5000m2 of gardens. It is in a 5000m2 compound including several habitations (4 or 5). You have a private access to 2 floors of the villa, the garden (+/- 1000m2) and the swimming pool. The family of the host lives on a floor under the 2 floors you have access to, therefore privacy is quite limited. Even though you do not share the same garden, you can hear the neighbors who are in the apartment under you. In addition, the compound is not that quiet, many tenants own dogs who bark during the night.
2/ Location : the villa is in the countryside in reality 5 to 10 km by road from Ericeira and Mafra centers (3km as the crow flies, maybe...). The ad mentions an access to the beach : if you have a car ! Do not expect to walk from the villa to the beach without a serious hike.
3/ Spa / Jacuzzi is missing (it had to be removed according to the host). There is no washing machine in the house (it is shared in the compound, making it hard to do your laundry due to avaibility of the machine), air conditioning is present only in the living room, not in the bedrooms
4/ Many details sould be improved to pretend to the term "luxury" : there is a constant smell of sewer in the house, the pool is in a room to small to play + most of the cues were broken, appliances were broken (vacuum cleaner, toaster, ...), outdoor furnitures are not practical and not sufficiant for 11 persons, the surrounding of the swimming pool is half broken and rusty, the swimming pool was cleaned once in 2 weeks (in between the pumps were switched off).
In conclusion, it is a big house with a big swimming pool in an isolated compound but definitely not a luxury villa with total privacy next to the sea.