Peter's place is in an amazing location. The British Museum is literally right behind the building and very convenient to go to (plus it's free). It's very close to the Piccadilly line and you can easily get to his place from LHR airport. Plus, Big Ben, Westminster Abbey, Trafalgar Square, and other major sites are all within a 10-15 minute walk from his place or you can easily just take the subway to most locations.
The place is relatively quiet, though some street noise can be heard if they are close to the building but it is on a side street so it wasn't really an issue.
We loved that Peter's place had a full kitchen and a washer/dryer and it was a good size for two people.
The bed was very large though a bit stiff and old which made it not too comfortable for those who like softer beds but overall I personally slept well for the most part.
From a running perspective, the River Thames is less about a 3-4 minute jog away and stretches for miles.
There are plenty of restaurants and souvenir shops around this place and you can also easily buy groceries too at a nearby Tesco.
All in all, we would love to stay again and Peter was a very communicative and awesome host and even let us store our bags on his property on checkout day as we continued to tour around London.