A nice spot to visit if you have an upcoming trip to London.
We visited a few years ago just before it was closed for refurbishment.
A few other refurbished houses to visit are listed here also:
What are your travel plans? 5 nights in total in London area? If so then I would be staying at the same hotel as there are more than enough things for you to do.
Then If you want to travel to other places for example then it is easy day trips by train to Windsor Castle, Hampton Court Palace, Canterbury & Leeds Castle, Bus trip to Stratford and Cotswolds. These are just a few ideas.
Let me know the length of your trip and your thoughts and I can give you my opinion.