Jack´s Library

This was such a fun experience. My husband and I are visiting from Pennsylvania, USA. We have been to a couple speakeasy's back home but nothing comes close to this. It is so unassuming from the front. It looks like such a quaint flower store from the road, but you ring the bell and wait for a staff member to let you in and then you have to complete a task before you are allowed to enter. The only horrible part is that it's such a cool spot that you want to take pictures of everything but no pictures or videos are allowed. The drinks were delicious. Would have loved to order food but we had come after dinner. The staff was nice and the one we interacted the most with was from Colombia originally and he was a gem. Might try to come back before we leave, but if not, we will absolutely come again next time.

I’m studying abroad in Madrid and was recommended this speakeasy by a friend. I’ve been numerous times throughout the semester - it is one of the coolest places I’ve ever been in. The hidden entrance and the drinks / menu / ambience of the whole place is truly unbeatable. Would definitely recommend checking it out!!!

We had no reservation upfront. So we were lucky to get a table for two on a Thursday evening. Definitely one of the best speakeasy bar we’ve visited. Great atmosphere and nice drinks paired with friendly staff.

As many reviews mention, this bar’s experience can be split into two parts: the entrance process and the drinks. I’ll start with the drinks, since that’s the easy part. The menu is creative, with a variety of styles and options. Personally, I’d have liked to see some simpler, more straightforward cocktails—but that’s just my taste. What we ordered was well-balanced and flavorful; mine leaned toward the acidic side. The bar's design and decor are top-notch—no debate there. Now, on to the entrance. I understand the whole “mysterious vibe” adds something special for many—especially younger guests—but personally, it didn’t do much for me. Thankfully, we only waited outside for about 15 minutes (I wouldn’t have waited much longer), but standing on the street during a heatwave in Madrid is not my idea of fun. Speaking from a business angle, I think this part of the experience might backfire. Happier, cooler guests might stick around for a second drink. As for me? We had one and felt ready to head home. That said, the staff were great throughout—friendly, attentive, and full of smiles.

Great little speakeasy with authentic curios inside. Make sure you know the password before you go!!! Delicious drinks. Personally I like the Victorian, Sherlock Holmes vibe. Not allowed to take photos but I wish I did!

A unique experience in Madrid which can’t be missed. We walked past the bar once and had to backtrack. The entrance experience is quite special. You might need to wait a minute or two, but that’s to keep the speakeasy vibes. The drinks were made with precision and the tastes and combinations were next level.

Jack's library is a very cool speakeasy next to another excellent cocktail bar, The Ficus. The attention to detail in creating the ambiance is fantastic! They have a no-picture/video and no-smoke breaks policy which is refreshing. Cocktails are fairly good, bartenders are attentive and helpful. It is worth the wait, usually between 20-30 mins. 10/10 would recommend!

One of the best speak easy / secret bar in town !! Cocktails 10/10, service 11/10 (there are some really nice waiters) and most importantly the atmosphere is unreal, you need to go to experience it 12/10, especially if you love libraries