Great stay at this Soho flat, with comfortable living and bedroom spaces for the family on a combined work and leisure trip. The spacious living room with large dining room table was in particular a great common area to hang out in. Washer/dryer were nice to have for a longer trip (bring a Tide Pod or 2...), and kitchen was well enough stocked for a meal or two in.
Location was great, with various tube stations within a few to several minutes walk away. Numerous restaurants and pubs close by, as well as a market (Tesco) and pharmacy (Boots - with this being a flat not a hotel, you'll need to either bring or pick up toiletries etc.). Oxford St, Regent St, Carnaby St, etc. right nearby, and the great British Museum also within a few minutes walk.
Communication was very good with the host, including on the day of arrival and check-in (side note: Uber was a bit of a nightmare this time from LHR, we gave up and Gett'ed a black cab -- if you're not taking mass transit, may want to strongly consider the car service they offer).
The only caveat noted by some is that the Wi-Fi appears to be communal for the building and not particularly strong or reliable. I was lucky enough to have a Vodafone UK mobile hotspot from prior business trips, but if you need strong Wi-Fi connectivity beyond what your cell phone roaming/travel plan offers, you may want to consider renting a mobile hotspot or buying your own for future use (e.g. TravelWifi).