We also check in our guests personally but we are off-site hosts so I am surprised that about 70% of our guests leave a review.
You said you are in a popular area - why is it popular? Is there any restaurant / bar / club / street festival / park / beach.... where your guests could go and have fun? If so, find it on internet , print and leave them in a map or clipboard like we do.
If you could find some city guides, maps, brochures with events provide that too.
Maybe some books about your town or area ?
We also have pockets hanging on the wall where we sorted all kinds of leaflets for restaurants, rentals (cars, bikes etc..) , excursions, museums, self service loundry etc....
Then all the informations about renting a car or a driver / public garages / info about street parking etc...
All the informations we provide are often mentioned in our reviews because our guests couldn't find a fraction of it by themselves during their average 2 nights stay. We do it because we know if they have a good time - they will be happy and when they are happy they leave good reviews 🙂