Please be careful with inviting Jelena as your guest. She expects hotel-like services for cheap Airbnb-pricing, and complains quite easily, which means more hassle for the host. I never had an issue with guests before, this is the first time.
First of all I explained Jelena very clearly that the keys needed to be collected at a keycafe, because I was not at home for Christmas, which she accepted. Since she arrived very late on Christmas Eve, around 9 PM, it was almost impossible to arrange a pickup place. In the end I arranged a place to stay open just for her. She had some delay with finding the location of the keycafe in time, because the phone number did not work, and she didn't bother to look on the internet for the contact information. Because I was on a plane at exactly the same time, she had to wait for 20 minutes until I was able to look on the internet for her.
Secondly, the apartment was in a clean condition, my cleaning lady came by on the day before Jelena arrived. I did not hear any complaints from her during their stay, otherwise I would have arranged my cleaning lady to clean again. It is not as clean as a hotel, however, the place is in a very reasonable condition for 80 GBP per night. Take in consideration that a hotel in central London would have cost you about 220 GBP per night during Christmas. In addition, I never had complaints before.