Around the property there are many cafes/restaurants where you can have your meals, and literally around the corner from the property, there's a Lidl supermarket where you can buy drinks and nibbles to take back with you.
Nuno is a very friendly and communicative host. Between him and his housekeeper Elaine, you'll have all the information you need, from how to arrive to the property, to courtesy messages checking up everything is OK, making your stay in Lisbon a pleasant one.
This is an EXCELLENT place if what you need is just a CLEAN, safe, and well-connected place to stay in Lisbon for a few days. I cannot recommend it enough.