The Kannell’s place is very functional. I was there for work and it provided everything I needed. I appreciated a couple touches such as tissues, wipes and an adaptor in the rooms, as well as soap and shampoo in the bathrooms. I also had coffee in the morning.
Another review said that this place is something in between an Airbnb and a hostel, and I agree. It is not necessarIly a negative feature, but it should be clear to future travellers.
Luckily, the apartment is very conveniently located. However, be very careful at Euston station, because there are numerous homeless/crazy/addicts, which sometimes also interact with the crowd using the station.