A good location to recover from a long transAtlantic flight (my case) but for a longer visit too. Some things I liked:
Easy access to public transport
Quiet, both the street and the apartment.
Room is large, well furnished with lots of storage space, clothes hangers, hooks (not always the case)
Individually adjustable electric heating (welcome in the winter)
Good bed linens and towels
Small touches: free bottled spring water, wall length mirror, box of Kleenex
Do it yourself breakfast ingredients, excellent coffee
Charles himself was helpful and discreet.