Had a great stay in #3 apartment on 2nd floor.
Whole building is rental apartments that was completely refurbished to high standard.
Flat was perfect : well sound proofed and quiet even if 5 minutes away from Oxford Street, with plenty of nice restaurants within a 10 minutes walk radius.
Furniture and bedding are of top quality, and so are the kitchen appliances.
Bedrooms are really perfect as well.
Heating is great with heating floors plus hot air ventilation.
Overall a faultless experience.
Only potential improvement could be to have more crockery : we had only 5 tea spoons for 5 people…