Yes, I agree with Glammanana - I have always known when I found the right home for me as soon as I saw it, sometimes before I even got inside.
I had a garden and an above-ground pool in the house I sold to help my daughter,but I couldn't afford anything similar because of the fall in the value of the pound . However, I am very happy in my small (24 sq. metres) flat because I would not have been able to look after a garden and pool with my many trips away from home. I am not a natural gardener and it seems there is always something that needs doing in a garden.
I made a list of my 'must haves', 'would be nice' and 'definitely nots' and I kept on looking at flats and studios until I found one that had everything I wanted - wonderful views, a full-length bath to wallow in, a balcony, not on ground floor, double bed for visitors, in easy reach (one hour) of airport , in good walking country, small supermarket close enough to walk if my car was ever off the road, privacy, no crowds, little traffic, pretty chalet-type block (I hate those multi-storey concrete monstrosities in some ski resorts). I found a few that had nearly everything, and I was tempted, but I kept on looking until I found Residence des Neiges - House of the Snows. The second line of my address is a mountain pass.
I think that if you have any doubts at all, you should try to envisage your daily life in the new house. Would the lack of a second bathroom make for argument? And would you be able to cope with the garden in ten or twenty years time. Are you thinking with your head or your heart - I found something that suited both!