We had a great Christmas in Jan Juc.
House worked very well for us - three couples, with another family (with kids) joining us for Christmas lunch. We loved hanging out in the front and back garden; and the easy access to the beach.
The house is decorated in an eclectic style and was nice and relaxed.
Only criticism would be that if you had little kids, the bathroom is upstairs (there is an outside toilet and shower though), so that could be a little annoying with little kids and the stairs are the kind you could fall between the stairs.
Other then that - would recommend for sure!