Nature's Center Vegetarian Restaurant

This place will fill you up. I tried the lomo saltado here because I wanted to see typical Peruvian food, and for 9 soles I could not finish it. That's unheard of for me. It was good, i also tried a bit of the soy meat sandwich (which was tiny but super cheap) and a pitcher of limonada that was also enormous. They have tons of options and it is a nice place. My only complaint is they let us stupid gringos buy 2 pitchers of limonada having no concept we were to get like a gallon of the stuff, and we paid for the extra one but gave it away.

[I went there late December 2014, the set menu for lunch was at 5 soles, and 4 soles for dinner / the hours were Monday-Friday 8h-14h & 17h-20h, and Sunday 8h-14h (closed Saturday)]

I went there two times for dinner (S/. 4) and if the food was like in many other vegetarian restaurants in Peru: soup and main course + beverage, but more flavourful than in other similar places.
A good place to go since I couldn't find the other ones (temporary of definitively closed?) and it's way cheaper than the veg-friendly places like Don Paco o Sanguchon.

Nature's Center is a few blocks from the Plaza. Their set menu is extremely popular with the locals. If you come to lunch or dinner late they may have run out of the main dish. The menu has great options for both vegans and lacto-vegetarians. The staff is friendly, but do not speak English. Like most restaurants in Peru the toilet facilities are bad.