We had a great time at Capital Residencies' Earl's Court apartment. The apartment is on the fourth floor (not the ground floor as the listing says - not sure why) of a classic English building that was recently renovated. The interior looks pretty new and modern and matches the pictures perfectly. It's not the most spacious but for three rooms in what is still Inner London it's great. We especially liked that it has two separate bedrooms plus an extra living room with the kitchen in it - perfect for a family with a child or a couple travelling with a friend.
The stairs are narrow and not entirely even, so keep in mind you'll have to lug your suitcases up (and down) four flights of them. But honestly it was a modest annoyance for us at most. The shower can be fickle - sometimes it's boiling hot, then freezing cold the next minute - but it works and goes back to normal eventually. The kitchen is somewhat minimally equipped, with four of everything (but no wine glasses and no sharp kitchen knives), but everything you need to make breakfast or cook a small meal. The apartment is clean by English standards - some dirt under the beds but nothing worth making a fuss over.
The place is close to a big road which is audible, but not bothersome. On the other side of the road there's a giant Tesco that is open almost 24/7, which is super useful. And it's juts a short walk to the tube (Earl's Court) and West Brompton railway station where you can catch a direct train to Watford Junction (Harry Potter Studio Tour anyone? 👀)
Some people complained about the locks in listings for the other apartments in the building - just read the instructions and don't try to unlock the door using the door bell. There are two devices with keypads on the front door. If you enter the code on the actual door lock's keypad, it works. Read the instructions, people.
All in all, great value and perfect for exploring London. Would stay again.