if you are looking for a coffee shop which is not family-friendly in the riverside area near Avalon there is a place called Blue Spice which has a average customer rating and is in the less than £20 price range
[['Blue Spice', 'eatType', 'coffee shop'], ['Blue Spice', 'priceRange', 'less than £20'], ['Blue Spice', 'customer rating', 'average'], ['Blue Spice', 'area', 'riverside'], ['Blue Spice', 'familyFriendly', 'no'], ['Blue Spice', 'near', 'Avalon']]