For a cottage with one or two bathrooms and one kitchen, then a 1/2 hp-110 volt, shallow well pump with a 30 gallon storage tank should be enough. The pump and tank typically gets installed in the crawl space under the cottage, and is capable of drawing water up to about 30' in elevation between the foot valve, at the bottom of the line, and the pump. The water line is usually 1 1/4" diameter black poly tube.
Lowe's in Gilford has good selection, 90-day easy-returns, & free hot cocoa. Lowe's also has instructional hand-outs to help figure the correct hp which is usually 1/2 or 3/4 hp.
Finding an air leak, replacing a leaky foot valve, chipmonks living winter in the 1 1/4" black poly line and stashing acorns....having a cottage with a pump eventually makes you a pump expert.
My pump is a Simer, made in Italy, and purchased from Rand's Hardware in Plymouth. It's pretty quiet for a pump. Previous pump was a freebie old Gould from a Squam Lake tear-down cottage
Simer water pumps, and Riello oil burners, both made in Italy, are very well built.