The day we made the trek to Saint Andrew's, we also wanted to visit Memento Park in the afternoon. Well, it's on the other side of town, and Budapest isn't the easiest city to navigate, due to traffic. So on the way, we stopped to eat at this unusual spot, an old bus station that has been converted into a restaurant-museum. It's the perfect place for a quick lunch (sandwiches, salads), with free wifi on offer.
Cafes are plentiful in Budapest. This is a small cafe where you can grab some fast food (sandwiches, pizza) or a coffee. Inside there are a few tables, but it's much better to sit out in the conservatory - very cozy, though a bit dark.
If you love Art Nouveau, then visit this house where furniture and tools from that era have been preserved. When you've finished visiting the museum, be sure to sit in the cafe on the ground floor and enjoy a coffee. It's a really quiet place, too; when we went there was only one other couple chatting quietly over their drinks.