Maggie was very accommodating, allowing us to drop our bags off early (we landed at LHR at 7:30am) and greeting us with a smile and lots of valuable info on local shopping, etc.
The flat was VERY comfortable and quiet, with the bedrooms at the back of the building, away from the road. Gloucester Terrace was not a busy road in any case and so sitting in the living room on the 3rd floor, was also relatively quiet. The walk from Paddington was easy, about 8mins from the tube exit. Since Paddington is on the Bakerloo, Circle, District, and Hammersmith lines, travel to anywhere was very easy. Also, a short bus ride took us to Portabello Rd market, which has not lost its charm over the last 50 years.
For the three of us, the stay was ideal.