This location is easy to be found, inside Ruko Permata Senayan, right at the first corner on the left after parking entrance.
The table mat is creatively cheap, just laminates newspaper pages from all over the world, including Japan.
There were some Japanese families who dined there, and apparently it is quite famous among Japanese community in Jakarta. 
The new menus are written on colorful memory cards attached with a ring.
The main menu book has an introduction of the head chef on the front page. 
My boyfriend and I ordered a pitcher of sangria. This is the best sangria I’ve ever tried in my life. I’m serious. The sweetness level is just right, and got some apple slices inside. The alcohol level was high enough to make me tipsy. 
I have been craving for Spanish Omelette (Tortilla de Patata), so I ordered it. The eggs are still runny inside, which my boyfriend really likes. The spicy aioli sauce is not spicy enough for me, but it is a nice combination for the egg. 
My boyfriend ordered Beef Chorizo Sausage in Spicy Sauce (Chorizo de Ternera al Infierno), which comes with mashed potato. The chorizo was quite nice, but I still prefer the 75-cm-long-smoked-beef-sausage at The Bistro, much crunchier. I have to admit that this is the best Chorizo Sausage I’ve ever tried. The mashed potato is too buttery for me. What made it more special is that the head chef served this dish to our table. 
We also ordered the new menu: Baby Octopus Pan Fried ‘a la minute with Caramelised Onion and Cherry Tomatoes. My boyfriend said the sauce looks like “saos Padang”. 
The head chef and his friend shared Squid Ink Paella. 
Before leaving the restaurant, the head chef had a quick chat with us and gave us his name card. Very friendly.
I like the colour of the table outdoor. 
I am putting Plan B restaurant as my “Plan A” when I crave for Spanish food, or whenever I go to Senayan area.
ThaTha-meter
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Price
Spanish Omelette (Tortilla de Patata) = IDR 30k
Beef Chorizo Sausage in Spicy Sauce (Chorizo de Ternera al Infierno) = IDR 36k
Baby Octopus = IDR 35k
Sangria (pitcher) = IDR 198k
ThaTha 