Thanks for your help. On Expedia after I signed in I ended up getting a total rate of around $650 (it seems a special rate if you have an expedia login) which turned out to be less, but can't reproduce that today. From what I can tell, twin and single are the same in the UK, on other websites the only bed choices I see for the hotel are twin, double and king (this is the case on both Thistle and Expedia). It seems on hotwire if I specify 2 guests and get the family room which sleeps 3 it will be $711 (this doesn't show up if I search with 2 adults + child), it is more on Expedia ($771, Expedia similarly has an issue with 2 adults + child, even though it says room is for 3, it claims the # of guests exceed it). I would think if I chose the guaranteed room for 3 on HOTWIRE I won't have an issue even though it will say 2 guests on the reservation? I will hopefully decide soon, 5% off makes it more reasonable compared to an apartment.