I'm really embarrassed to admit I got suckered in by this company. My first trip with their service was OK; the accommodations were fine by European standards and at $600 for the week, well priced.
But the annual fee has increased every year since I joined and is now unreasonable. I'm cutting my losses and cancelling my membership and will warn anyone I meet against them. With all the restrictions and fees, it's a rip-off unless you have unlimited time to travel and complete control over your schedule for planning purposes.
And even then you can probably find similar accommodations without this "service." Total rip-off.