thanks all! I have no idea why ILs are being weird about contacting the owner. I'm assuming they know the person since they (ILs) spend 5 months a year there and supposedly it's only a few houses down. So we can absolutely ask for the contact information, but it seems odd since they're ostensibly MIL's neighbors/acquaintances.
We can't figure out why if this place is for rent - and so sought after that we need to book it now, according to IL's - there aren't any available pics online. We will NOT commit to it without seeing any, that's for sure
To pp's question - yes, they're retired and we see MIL every 8 weeks or so, FIL probably 4 times a year (including these vacations). The lake is nice and all, but it wouldn't be OUR nuclear family's vacation of choice necessarily.