Stayed two nights (298GBP w/o breakfast) for a Hyde Park event. Location-wise perfect, situated just by Hyde Park and with the Lancaster Gate tube station just around the corner. 5-10 minute walk from Paddington Station (Heathrow Express).
Room felt sort of worn + quite small. Windows leaked a bit of noise from the street, but not that disturbing. I guess it's the kind of standard you'd expect from a London hotel, but nothing more.
Staff was great, especially at check-in.
4* hotel with a 2-3* feel and a 5* location. We probably won't be coming back unless we get a really good deal.