The prior posters have been courteous. "plank walls for insulation"?
Run from this one! There is no way that this would come anywhere close to meeting current NH building code
http://www.puc.nh.gov/EnergyCodes/Form%20EC-1.pdf
This is realtor-speak for "doesn't have a lick of insulation and you will need a second mortgage just to keep the house at 50 in winter"
I suggest you keep looking.
Having stated the above, I'd echo what others have advised here. Visit...perhaps rent, before you buy. Based on your other posts, you should understand that the properties you are looking at are well below the average price for a home in the area. As a result, you will get what you pay for.
Looking at the listing for the "plank home" you have mentioned, it looks like a lovely structure on a very nice lot. BUT... no insulation that I can see,not to mention other amenities to make it reasonably inhabitable year-round. You would need to factor in many, many updates and upgrades.
As an example, with no insulation, in that location, you would most likely be looking at $6-7000 per winter in heating costs (assuming 2000 gallons of heating fuel at $3/gal...and this is probably low.)
While others have posted of the advantages of the town and location, it may not be the location that your husband dreams about in his memories of coming to Winnipesaukee. For some, it may be considered quite a way from the lake. NH is somewhat weird like that. North-South travel is a LOT easier than East-West as the roads and routes are structured more for n-s travel, and what may look like a short distance on the online map can be a LONG drive at 1AM over single-lane, windy, frost-heaved roads.
Please don't take my comments as trying to discourage your dream of moving here. I live here and love every moment. But make sure you do it with eyes open and good information. Otherwise you may be very disappointed.