I've been to Tibet Cafe a number of times, and my friends and I are always excited to go back. There are two great patios - I especially enjoy the back one. The patios get tons of light, and the front one is perfect for people watching in Kensington.
The food is delicious, with many options for vegetarians, vegans and the gluten-free. The portions are large and the prices are low. I especially enjoy the veggie and tofu stirfry on rice - super tasty and with tons of veggies.
The service isn't always that great, and sometimes if you're on a patio you will have to go in to remind them that you're there. The inside is a bit dirty, with smudges on the walls and stains on the seats.
But for the price, the awesome food, the great location and the many menu options...I'll keep going back for sure!