Everything is great... until it isn't.
TL;DR:
+ Opening an account takes about five minutes.
+ The base model is free.
+ Both the web- and iOS-app are very intuitive and easy to use, can't say anything about the Android-app.
~ The support chat is not very useful unless you reach the right person.
- If you use the free plan and have to reinstall the app for some reason, you'll be locked out of both your bank account and any associated cards.

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FULL REVIEW:
I switched to N26 about a month ago and I was really happy. The setup is quick and easy, there are (in the lowest plan of course) no recurring fees and adding the card to Apple Pay was done in minutes.

Unfortunately, there was (or still is?) a small bug in my account (the app had a big popup telling me that I have to add funds (which I did right at the initial setup) to activate the card (which I was already using in stores)), which led to me contacting the support. After waiting about 20 minutes in the chat and then talking to them, they suggested that I remove my connected phone, uninstall the app, restart my phone and reinstall the app afterwards. Didn't make much sense to me as the error appeared on my PC and Mac as well, but sure - I thought - why not? Can't get any worse - I thought. After removing the app from my account through the web interface, I was automatically logged out from the website and therefore the support chat. No big deal, I just logged in again and started a new chat. Waiting another 20 minutes, explaining everything to a new employee who then just transferred me to the previous employee (alright.. makes sense... I guess). After explaining that I successfully went through all the steps mentioned above, they told me I had to re-verify my account, because there is no other way to register the app. For the re-verification they had to un-verify me first. I thought no problem, shouldn't take long, didn't take long when I created the account. Unfortunately the email to verify my account never arrived. So I logged in again, started yet another chat, waited another 20 minutes and explained everything to employee number three (this time they didn't redirect me to the first employee for some reason). This (so far) last employee told me that they "escalated" the ticket, but the support is closed for now. Apparently they'll contact me next week. This is my main bank account where I receive my monthly income and from which I pay all my bills and subscriptions.

If you don't (want to) use physical money and are happy with a credit card or Apple/Google Pay, this is probably the bank for you. Compared to R*****t, N26's web app gives you the same features as the phone app, which is a huge plus in my eyes. If you choose one of the premium plans, you also get insurances and other extras.
For now I can't fully recommend it, because my experience with the support wasn't the best so far, but we'll see what the next days bring.

UPDATE: ±0 Stars
1. The email arrived after about twelve hours and I was able to re-verify my account. Unfortunately we're just back to where we started as the initial problem wasn't resolved.

UPDATE: +2 Stars
1. Since the re-verification from the first update was done within 24 hours and it didn't cause any issues with automated payments or subscriptions, I'll add one star for it not being a big issue after all.
2. The second star I'm adding is for the quick reply here on Trustpilot which was followed by a short email conversation. I'm hoping we can resolve the issue in the next week.
3. Changed the recommendation.

UPDATE: +1 Star
1. The problem was solved after talking to the support for a while. It took some time, but I did get help right after posting this review and then it went really well.
2. For now I will leave the review the way it is, because it represents my experience correctly.
3. Added a tl;dr, because the full review is way too long. :D

[I'll probably update/change the review after using N26 for a few months.]