The single bedroom in Adrian's apartment was an excellent space for a few days in central London because the location is excellent, the apartment is clean, full use of the bathroom and kitchen, and Adrian was an excellent and communicative host.
I visited for a weekend in April 2018 and had an easy time going around central London. The closest tube station, Pimlico, is an easy ten minute walk from the apartment. There is a close grocery store, Tesco, right around the corner for quick food or snacks.
The bedroom has a twin size bed that is good for one person. You share the bathroom which is down the hallway and has a big shower space. Adrian provides towels and offers tea, coffee, and breakfast.
In summary, this is a great spot in Central London for a great value price for someone visiting London who is spending a lot of their time exploring the city. Thank you Adrian!