"Мне кажется, в этом ресторане макароны теплее, почти горячие."

Translation: It seems, pasta at this restaurant is warmer, almost hot.

[flootzavut]

Damning with faint praise here!

[macroy99]

Why not The restaurant?

[an_alias]

I suspect because of the comparison (the pasta is warmer - warmer than what? The pasta at THAT restaurant.) So you need to specify THIS restaurant for the sentence to actually work.