I booked two apartments of Claire's in the same building for visiting colleagues. Claire was very quick to respond to e-mails and queries, accommodating in terms of providing extra keys/bedding etc. and a very friendly host. The flats are ex-local authority properties so the shared spaces (lifts, stairwells etc.) are a little scruffy and the surroundings not particularly charming, but inside the flats are light, clean and comfortably furnished with really great views over the city (impressive even for someone who lives in London!)