Definitely visit them, don't just believe the reviews. PPs have said pretty much everything I would say about the staff and applications etc. Don't base it on distance alone!
However, in regards to distance...
You can make a longer commute work (more decompression time, chance to have clear structures and routines), some potentially decent exercise opportunities etc, but 3 miles is quite the journey for little legs, so you might be beholden to bikes, cars or public transport.
I have found that having a school 10 minutes mooch away from us was really helpful in the early days because getting anywhere took forever, but the walking down to school helped everyone to regulate and chill, but we could mainly chill because it was such a short distance and we left half an hour for a 10 minute walk to account for fallings over, inspection of dog poo, loud commentary about why the van still had a flat tyre, going back to get water bottles, wailing because the icecream van wasn't there etc. Plus, if you have siblings, you may need to do 2 drop offs at some point, and from a practical POV, being close reduces family stress. Luckily our two nurseries have half an hour between drop offs, so we can mosey on down from one to the other but I can imagine that the stress if they were further away or times were closer would be a significant factor in our family stress levels,especially in the early days.
For us, the ability to walk to school and really get to know our local area, say hello on the same walk to the same people, pass by nursery in the summer holidays to prompt remindingthat it still exists on a weekly basis has been valuable. Plus, it meant that I got a few more precious minutes at home on my own!
Don't choose a school on that basis, but you are right it is a factor worth considering.