The benefit is the limited liability that a limited company brings. At present, you two are liable for the debts "right down to your collar stud" as we used to say, but collar stud includes everything you own. With the limited company , only the company has the debts, not the shareholders or directors, though they may lose their investment in it and banks may ask directors to personally guarantee loans to the company.
Solicitors often have a limited liability partnership, rather than a company or ordinary partnership, but I suspect that your accountant will say that doesn't apply to you.
Ask about the tax advantages and any disadvantages. You can be paid a salary by the company, as a matter of course, and also draw dividends from the profits in accordance with your shareholding. Ask about corporation tax. Companies don't pay income tax or capital gains tax and the rates of corporation tax are lower than for those. Those companies treated as small companies (and that covers companies that most people would regard as not really small) are particularly well-treated. Companies don't die, so they don't pay inheritance tax, and neither do the owners' estates on their deaths, assuming that the company is trading and not debarred from relief of 100 per cent being given (some companies are) .