Accommodations

You can still reserve a room at Hotel El Convento by calling their reservations department Monday through Friday between 9:30am and 6pm (local time). You must stay a minimum of 2 nights to receive the discounted rate. When you call, mention that you are booking a room under the Pintos-Espino wedding block.
Another option is a hotel across the street from Hotel El Convento called Palacio Provincial. This is the sister hotel of Hotel El Convento and is actually cheaper in price (and just as beautiful) but is for ADULTS ONLY. See website for more info: https://www.palacioprovincial.com/.
Some other options in the area include:
Casablanca Hotel at https://www.hotelcasablancapr.com
The Sheraton Old San Juan at https://www.marriott.com/en-us/hotels/sjuol-sheraton-old-san-juan-hotel/overview/
There are also a variety of AirBnB options in Old San Juan and in the greater San Juan area.