I traveled to London in June with my girlfriend and her 16 and 13 year old sons and stayed at this property for a week. It was a good stay for us, but here are some things to be aware of to make sure it is for you.
We arrived at 6am the first day of our stay. Check-in isn't until 3pm but Billie arranged for us to leave our bags at her workplace that day until we could check in, which was very nice. We didn't wind up need this service, however, as the airline lost our baggage and only delivered them to us at the apartment at 10pm that night. Once the Klevio key was activated we had zero issues getting in the building or our room.
Communication with Max and Billie was easy and very good. They answered any question that I may have in a reasonable amount of time. They left a binder with information about the neighborhood and places to eat or drink, which was nice.
The building is in a great location, within a 5 min walk to the Notting Hill Gate tube station which serves the Circle, District and Central lines, which made it very easy to get around town. It is only two stops away from Paddington Station, or a 20 min walk if you don't have any baggage. It is also a 15 min walk to High Street Kensington with more shops and restaurants and a few minutes from the vibrant Portobello Road Market which we were able to visit on a Saturday. Kensington Garden and Hyde Park are a very short walk away as well.
There are several shops to get coffee or tea in the AM or pastries in very close proximity, as well as a gelato shop that we hit every night. An M&S grocery is a couple of blocks away and there is also a little 24hr convenience store right around the corner.
The room is on the top floor and there is no lift, but that wasn't an issue for us, except for bringing in our baggage the first night.
No air conditioning, as described. Typically it was cool enough at night that it wasn't needed.
The pull out couch wasn't the most comfortable in the world. One boy took the mattress from the fold out bed and decided to sleep on it on the floor while the other simply slept on the regular couch. The regular bed was comfortable enough. The room is a little tight for 4 adults, especially from an American perspective, but we didn't spend a lot of time in the room except to sleep or clean up. With the couch folded up into a normal couch, there is a lot of room.
The shower and toilet was clean and in good shape.
We received a decent amount of towels on the first day, but we were told it was an additional charge if we wanted to trade our towels in for fresh ones. We did have the option of washing them ourselves. There are two washer/dryer combo units in the basement. One appeared to be out of order while we were there.
In all, we had a very good say in this room and it was a great starting out point for our week of exploring the greater London area.