We did our 5 day isolation at Fiona and Felix's studio.
Fiona was so sweet and helpful when we checked in. She offered to help carry our bags down to the studio. She was also kind enough to leave us some breakfast items, since we checked in very late.
The studio was clean, comfy, spacious and cosy. It had the basic essentials that you'd need.
The shower was amazing because of the water pressure
Fiona was very responsive which helped great deal.
I would definitely recommend this studio for visitors to London.