This is one of the frescos in close up - I have no idea what it represents but my guess would be that it is a saint.
There are two lovely gardens called, with a distinct lack of imagination, the large garden and the small garden. The large garden is a courtyard garden which is laid out like a parterre with a central fountain and has two Italianate loggias with triple arcades set along the surrounding walls. The loggias have several niches containing classical statues.
Bacchus isn't very clear in the previous photo so here's a closer view of him.