Amazing very spacious quiet convenient garden apartment in central London

My mum and I were looking forward to hosting Cheryl and Edward and we responded to their multiple questions beforehand and made sure we provided everything that they requested. My mum even waited 4 hours for them for a journey which should have taken 1 hour and also took the time to show them around the neighbourhood. The heating is controlled by a Nest thermostat which means it does not need to be changed as it turns on and off automatically. It is set at 19 C which is the recommended temperature. We do ask guests to let us know if they wish to alter the temperature and so I was happy to increase the temperature for Cheryl and Ed. In the summer insects are unavoidable especially as we have a lovely back garden and are close to a nature reserve. My mum noticed house flies which do not bite and are common in England. There is no smell in the kitchen. We have many guests from other holiday rental sites and no one has complained before. My mum came to investigate but could not find anything. We provide a French press coffee maker which unfortunately Cheryl and Edward were not happy with. The front yard is not full of trash cans, but Cheryl and Edward might be referring to the recycling bins that are provided by the council. My father often comes to cut the grass in the back yard and also tend to the front garden. Cheryl kept pretending that the wooden floors are slippery so when my mum came for the check out she instead pretended that it was the rug that was slippery by pushing the rug with her leg! Any rug can be moved in that way but neither the floor or rug are slippery! We enjoy opening our home to guests as it is great to meet positive and friendly people from all over the world. Unfortunately this was not a pleasant experience as Cheryl was unreasonable and used inappropriate language. For example she kept insisting my mum sign a piece of paper at check out and blamed us for things nothing to do with us such as issues with their phone. I do not recommend Cheryl and Edward to other hosts.