We stayed for a long weekend in the Hourglass for a family reunion and the apartment was ideal for the 2 families. It's spacious (for London !) and set in a quiet mews style courtyard in Holburn, with 2 tube stations within easy walking distance.
The apartment was exactly as described on the web and Jan and his welcome team were easy to deal with and very prompt in their responses. Happily stay there again on a future trip to London.