we don't often stay in hotels preferring apartments or houses so we have plenty of room, especially when travelling with the children who are now older and don't want to share a room with us.
Hotel/complex wise you cant beat the Soho House group. Farm house in Oxfordshire and Beach House Miami stick out in particular. Amazing rooms/chalets/suites, the best service ever nothing is too much bother and they genuinely appear that way, not false at all. Down to sieving my orange juice, despite me insisting not to, because it had bits in and I only drink smooth orange juice. 
Huge walk in showers, attentive staff on the beach in Miami, fab pool at farm house, I'm told the gym is amazing but I didn't try it, I was too busy relaxing. Gorgeous court yard at farm house with a deli for leisurely lunch with a bottle of wine, cowshed spa. I could go on.
the other that I really liked in the uk, which again stands out more for the amazing staff than the hotel itself is the hotel du vin in Cheltenham. Wasn't that impressed with Cheltenham in fact we found very little to do so forced relaxation. But despite the ubiquitous bath in the bedroom, the showers were fab, the bed comfortable and the cocktails were great.
It has a small cigar hut in the grounds, which is supposed to be the smoking area but when we were there it was empty so was a lovely place to go and sit on the evening with the fire on and soft blankets to keep you warm and chat and just enjoy the child free time.
like others the hotels in Dubai are out of this world but they left me cold as I didn't like Dubai as a place and wouldn't visit again.