The sanctuary has two small rooms, all separate and in individual houses. The first room has an Achey breaky bed, (1 star), a pint size fridge, (1 star) and a 2 star bookshelf. And in the second (back) room, is a shower of power, (2 star,) and a 1 star toilet. The back room (bathroom) has surprisingly, no sink. It is surrounded with trees and bushes. All the home furnishings sell for 245 simoeleons. The sanctuary sells can be built for 10 LP on the standard residences and 20 LP on the premium residences.
I would say it is easier to look at what it has, buy an empty lot and build it yourself, for about 5000 simoleons, it is cheaper and it only requires an empty lot. It is better than spending 10 or 20 LPHope this helped!