My family and I stayed at Sebastian's place for 4 nights in December. The self-check-in was super easy and convenient, and Sebastian was very responsive and always replied quickly whenever I had questions about the property.
The location is fantastic! It is right next to Coop, so it was very easy to get food for our meals. It is also very well connected as the Angel tube station is only 10 minutes away and there is a bus stop very close by too. Most days, we actually did not end up getting any public transport as many popular sites are within walking distance. Our favourite part is that it is right by Regent's Canal, which is lovely for a long walk.
The property was very clean, with well-functioning wifi and heating and it was fully furnished with anything you might need for your stay. Perhaps it would be better suited for 3 people (we were 4 adults) as the sofa bed is not very big, but overall it was definitely worth the price we paid and we would definitely recommend it!