Hotel El Convento
Lonely Planet review
Not just the best hotel in León, but one of the best in the country, this architectural dream surrounds impressive, almost English gardens with spacious rooms replete with amenities; the suites are much nicer, with huge windows. You're surrounded by precious paintings and carvings (the owners also operate Museo de Arte Fundación Ortiz-Guardián), some of it among the finest colonial religious art you're ever likely to see.
The fancy on-site restaurant, El Victoriano, is predictably pricey, but may be worth a cappuccino just so you have an excuse to check this place out.