Wifi Set Up at the Lake- Need A Refereal

[AC2717]

have to talk wireless from the main point (which is hardwired to the modem) and they need to be for outdoor/indoor use. we have a decent one right now that is without repeaters and it is just spotty, need to sure it up by placing a repeater here or there in some of the cottages to get full coverage I would think, just don't know where and how to do it properly or which to use, these can be plugged into the wall for power which is a good thing