Need episode help

Can anyone help me here? I need to remember which episode it was where a couple ended up buying a house which had some water in their back garden where a lot of mosquitoes were buzzing. I remember the last scene of the episode, showed the couple with their young children strolling down a lane near their new home. I absolutely loved the countryside in this episode, and would love to see it again. They seem to replay every other episode. It's quite disheartening. :|