Justin's place was amazing. Clean and very nice. It is very well equipped and reasonably close to Underground stations (about 10 minute walk). It is located in a quiet neighbourhood, which seemed safe to me. Me and my GF often wandered around London until evening and arrived to Justin's place and night and we never felt unsafe on our way from Underground to apartment.
Justin was a great host, very responsive and kind. I could only recommend him and his apartment.