@Factfinder
I think there are many "it depends" situations to be looked here.
For example, my house is detached. But detached by about 3feet from my neighbours! I have a street light outside, and I have good neighbours except for one, and feel that the Police could probably come if I had trouble. So I do not feel particularly nervous and have only had a couple of times when the dogs barked in such a way as to make me put on all the lights and look out of the window to see if someone was in the garden. I am on my own. I do know how it feels to be scared at night. After we moved after the death of my husband, my 3 children were still with me, I used to wake up in the new house in a sweat of real over the noises in the roof! I was sick with fear that it was falling down! I see now that I was suffering from anxiety. The noise was the wind.
My late mother's house (where I was born in fact) was in a village with no street lights and her neighbours could not see her house. The Police gave a talk and said there was one of them on duty at night policing a radius of some 20 miles of countryside known for its narrow winding lanes. In other words, if you need the Police at night in a hurry, bad luck.
I would be unhappy in a flat without a garden as I was born in the country and yearn to be outdoors with my dogs.
We are all different.
When I moved house I made a list on a grid and gave a points system for each house I saw on the aspects which I particularly wanted my home to have starting with 'essential' (mine began, garden, off road parking, walking distance to school, not isolated, not overlooked, etc) down to 'would be nice' and scoring each place I saw 1-3, 3 being perfect, 1 being I would prefer not. If it was hopeless I put an x and took that house out of the reckoning!
Somehow, using my system I worked out which house of those available would be best for my daughter and me. I can only suggest you look at places and see what you feel and think about them. Sometimes you know immediately that you could not live somewhere and conversely sometimes you feel so at home in another place.
I do hope you find the right place for you both. It is important as we enter our older years, to remember that having a home near the things we need is more important to us than when we were young. The Doctor's surgery, a decent shop, maybe the bank, Church, a bus service... One day one of us will pass on and the remaining partner will be more reliant on the community. A place where there is a community spirit is always lovely.
Wishing you every bit of good luck in your venture. Looking for a new home should be enjoyable. Don't make it a burden! You do not have to rush it, fortunately. You can wait until the right place is available.