Hotel stay for 60th birthday

[OnthePiste]

Hi DH's big birthday is approaching and I am looking to take him away for the night. Looking for recommendations in the South East/London areas for a hotel with the wow factor. Needs to have a decent bar and not too stuffy.

I took him to The Grove in Hertfordshire for his 50th so the bar is set high! Any help appreciated.

Treehouse Hotel London

Southampton Harbour & Spa hotel, looks like a ship, great service, lovely rooms, would recommend.

https://www.belmond.com/hotels/europe/uk/oxfordshire/belmond-le-manoir-aux-quat-saisons/?gclid=EAIaIQobChMI8Niicnu9gIVW-ztCh3IJgyVEAAYASAAEgLYUvDD_BwE