The appartment is nice, clean and everything as expected from the pictures. The location is nice with a 5 minute walk to the tube. Very good location for Heathrow Airport as it is on the Picadelly line with 20-25 minutes to/from the airport.
The area is fine and close to high street with shops. Worth taking a bus to Chiswick if wanting to experience something different and go for a walk. The bus stop is right outside the appartment.
The downside is that the tenants upstairs are really loud when they walk around. During our stay they started at around 6 in the morning and again late in the evening until past midnight.
We also had problems with the smoke detector, which is placed very near the kitchen, so even with windows open and fans running, it activated from preparing breakfast.
All in all it was a very nice stay with all the things we needed. The noise from upstairs is important to be aware of.