I absolutely loved my stay at Marina's place! She was so communicative from the start and check in was quick and simple.
The apartment is in a very safe location, and very close by there are a few grocery stores, pharmacies, and good places to eat! I felt safe walking home alone from the tube station late most nights as well, which as a woman travelling alone was a very big plus for me. The apartment itself is lovely and well-decorated, and has a washing machine as well which really came in handy. There is also a clothing rack and set of drawers available to use if you're staying longer.
The only thing is there is no Wi-Fi, but there is a BT wi-fi that is pretty cheap (about £8 for a day, discounted if you pay for a month) and since I spent most days out of the house anyways it didn't really matter too much to me. The location and ease of use of the flat was worth the trade-off!
Overall I couldn't have asked for a better place to stay in London and will definitely be coming back!