person A: We had a pretty fun family vacation about a month ago.
person B: Sweet! Where did you go?
person A: We went to a lake not far from here.  We had a ton of fun on the boat . . . nobody else was on the water one of the days!
person B: That would be awesome to have the whole lake to yourself! My guess is the weather was nice too if you guys got to use the boat most days!