FellPaisleyWrack Yes, Virtuoso Advisor can negotiate long term rentals/stays. And depending the property, some are designed with this in mind.
For example, just this week, I negotiated a month long stay for a client at Rosewood Mayakoba at a substantially discounted rate.
Last week, I negotiated a similar deal at an Aman for a client for an extended stay.
Dorado Beach is publicly offering discounted long term stay deals. Discounts for stays between 14 nights - 60 nights or more and the discounts increases along with the duration.
In December, I booked myself a nearly month long stay at Rosewood Hong Kong's longer term Residence which is like service apartments but obviously a different league, entirely.
The value was very good vs. booking a suite on the hotel side.
I think you'll be surprised in the value you may be able to find. But like all things in this space, it can vary widely between properties.