Against my better judgment, I offer the following questions for your consideration - honestly answering these (not here) will guide your ultimate decision. These are also offered on the concept that once you get into a high end place like that once, you will do what you can to stay there. Leaving a place like that is a mega-depressing event, a real emotional killer.
1) Can you afford it now?
2) Will your current clients be able to afford the cost increase to offset the added expense of having such a place while still allowing you to eat and live indoors?
3) What kind of competition do you have in your area, and what does your moving into that space offer that would cause future clients to abandon the competition and go to you?
4) Have you factored in the facilities and equipment maintenance costs, utilities, insurance, taxes (if applicable) and other 'costs of doing business' into your budgetary considerations?
5) Have you considered your financial situation when you go a month, maybe two, without a single penny of income? Bills still must be paid, regardless.
6) Are your results/final products going to increase significantly enough to warrant the tremendous financial outlay involved?
7) Have you looked at/talked with other engineers/studio operators that have had decades more experience, platinum records, Grammy awards, and found out why they went under, and why you have something to offer different enough to keep you open while they went under?
I only offer these as seriously soul searching questions to answer before you even consider ANY place, much less a place of that caliber. It is of course your decision, but keep in mind nothing is worse than having to sell your gear for pennies on the dollar just to pay rent on a low end apartment, as you lost pretty much everything due to not being 100% prepared and armed with as much knowledge as possible going in
Just an opinion...based on experience from a LOOOOONNGGG time ago