Very good location, close (3 min walk) to two Underground stations and very close (3 min walk) to Kensington Gardens. You can walk down through Kensington Gardens, a lovely park, to Buckingham Palace or the Natural History Museum. Time for either destinations is about 20/25 minutes which is lovely if the weather is good. Otherwise the Underground will take you wherever you need to go.
In terms of the hotel: staff were very friendly and helpful, hotel is very clean and location is excellent. Only slight (very slight!) complaint is that our room was smaller than the photos looked, and the bathroom/shower was quite small. However, we only needed the room to sleep in so it wasn't a big deal for us. The location of the hotel (Bayswater, London) is quite nice, but there were a few care-worn buildings near the hotel - but the hotel itself was kept in very good condition inside and out.
Overall I would recommend this hotel for anyone who wants to stay in a nice area in London with quick and easy connections to all the city centre attractions.