In addition to the main front door having a flush inset door mat (see below), this probably also makes sense for the entrance to the boots & coats room
For general floor mats, these “eco mats” look good:
Eco barrier and door mats to keep your home clean and looking great. We’ve got fun door mats, mats for dogs, for keen gardeners and for doing your laundry. Super absorbent and durable, the mats get softer the more they’re washed and are made of 100% recycled materials by UK manufacturer Hug Rug.