El Invernadero de Los Peñotes

Address: Plaza de la Botánica, 1, Madrid. A quick check on the map can help confirm the entrance and the easiest approach.

Looks like they're open every day, so you don't need to worry about timing your visit around a closed day.

According to available data, this is a restaurant. Better suited to a more relaxed visit, a full meal, and a sit-down experience.

Reservations are available but not required. Booking ahead can still help at busy times.