Last Christmas we got a Sylvanian Families set and it took hours to put together, thankfully with this Cedar Terrace no construction is required! It simply lifts out of the box and has no loose parts, it also feels quite sturdy - much more so than other (non Sylvanian Family) houses we've had.
You have the choice of having this as a three floor house, or the top level can be removed and placed outside as a garden. The underside is textured to look like grass and removing/replacing it take seconds. This is one of the smaller houses but it's not small enough to be considered portable. Besides which the back is open so everything would fall out! It's not so small that you'll struggle to fit furniture in, but it's also not so large that it will cost a fortune to furnish it either.
In a nutshell: At full price (currently £40) it's not tremendous value for money as it comes with no figures or furniture which is usual for Sylvanian families, but if you can find this reduced then it's one of the better houses and has great play value. It would be a great way to start a collection, and would complement an existing set nicely.