I have stayed at this hotel on a number of occasions over the past few weeks for business and have found it to be a perfectly acceptable place to stay. The Hotel building itself is easy to find, but it can be quite tricky to work out how to get in and park, but once you've worked it out its not too bad at all.
The hotels is easily accessible, being on the A4 itself and close to Heathrow, I used it as a base to travel further into London for business, and it worked well. There always seemed to be enough parking available, though there aren't too many spaces.
The reception area is nice, and the staff have always been polite and helpful, the rooms themselves are very nice, the beds are comfortable and the bathrooms are clean, the showers are particularly good.
The restaurant is OK, there is a hot plate buffet with a selection, or a menu from which you can order, for most of the time I have spent there I just want to eat quickly and do some work or go to bed, which this is fine for, but if there was any space for improvement it would be in the restaurant.
Overall a comfortable, clean and easily accessible hotel, which would be very handy for the airport or makes a good base for getting further into London less