I have two homes on a somewhat remote island in the middle of a lake.
First off, I hate you...
If you had any idea how much of a PITA it is to do upkeep on two (actually 3... I have a primary residence nestled comfortably in suburban Ohio.. but that isn't important) homes... let alone the kick in the crotch I get from the tax man, you probably wouldn't hate me as much.
Just joking. I personally would suggest setting up a Point-to-Point (PTP) wireless link. You will get a more stable connection with higher speeds then going with a repeater. repeaters are good but the biggest drawback is they cut your transmit speed in half. You are going to spend more for a PTP solution but you will never have to worry about it again.
I’m hearing good things about Ubiquiti Networks as their products are pretty cheap.http://www.ubnt.com/
Oh and Post 1000!! WOOT
I'm glad you mentioned that about the transmit speeds... as it was a question I had. Does that mean that both locations will see speeds cut in half, or only on the repeater side? I'm not too concerned if the rental unit can't stream HQ videos from PornTube... but it would be nice if they can do some Googling and check their Facebook. Me on the other hand, I do stream content from my home network (the 3rd home I talked about) for my kids to watch movies and whatnot stored on my home NAS. I don't want to lose this.