My friend and I stayed at Nadine's place and we had a lovely time in London.
The studio is spacious enough for 1 person but was a bit of a squeeze for two with our luggage - would be best for a solo traveler. The building itself is primarily inhabited by students. There is a view of the canal from the room, and the heater kept us warm at night. There is a front desk and a common area with games and books, and the studio was stocked with some teas and coffee.
The location of the studio is in a quiet neighborhood close to Portobello road market. It's a short walk to Westbourne park station and a short bus trip away from Notting hill station. Unfortunately for us, there were a few tube closures involving Westbourne park, which meant that it took a little longer to get into Central London. Would recommend the area for travelers that want a bit of quiet during their trip, but not so much for those who want convenience and to be in the center of the nightlife and excitement.
Nadine was traveling during the time we stayed at her place, but was always responsive whenever she had access to wifi. We came into a couple of problems but she responded to our concerns. We had some trouble initially getting the keys from the front desk, but was eventually able to do so. We also had to buy an extra towel as the unit was not prepared for 2 people.
Overall, Nadine was a friendly host and has a cute studio in London! Best for solo, seasoned travelers and not for first time visitors.