Positives: Wonderful, responsive host, who left clear instructions. Excellent wifi + interior heating + TV entertainment (Netflix a big plus). Premises neat and located very conveniently to all transport - buses, trains, underground, taxis, Uber. Shopping, pubs, restaurants all close (mainly walking distance) and highly convenient.
Negatives: Main bed was a mattress on the floor (no bed base). No microwave or toaster present. As we were resident for 6 weeks, it was inconvenient that no cleaning service or change of linen supplied, nor sufficient in-cupboard clothes storage space (so, better for short stays, I guess). Location next to busy school which was periodically very noisy. Large TV was good, but too close to seating and distance could not be easily adjusted due to space constraint.