Just bought house- concerning neighbor behavior

To what degree is the area gentrified? i.e. younger people moving into an old established neighbourhood, doing up the houses, adding value to the properties and essentially elevating the road to a more sought after area? If it's well on the way, then I think incidents like this will decrease not increase over time.

You say you "love" the area so there's obviously something attractive about it. I'd take a wider view than some people here. Are you getting a good deal on the house? If you start your house hunting again, will that mean a0 year or two of more rent? Potentially 24K at least going in rent before you get another house?

They're not next door to you which is a significant point to make. Maybe they're permanent residents but maybe they're renting which means they could move on ultimately. I'd really try and establish what the neighbours say and what they're thinking. If the Gardai say that those people are not representative of the type of people living on that street, then that might provide some reassurance. However, if the general area hasn't been gentrified (yet), then you may have to accept that you've got a property in your price range, close to the city, but it comes with "baggage" right now. And it's up to you to decide if this is worth going for.

There are some estates and areas of Dublin that may never move on from the bad name they have- families entrenched in drugs, violence and just not giving a damn about their surroundings.

So while I appreciate you don't want to mention the area, you have to make this decision yourself. Parts of inner city south Dublin were no-go areas 15 years ago- now they're the most expensive parts of Dublin, by square metre. If that's the sort of area you're about to move into, the longer term financial return may be worth a few disturbances as long as they're only isolated.

Loud continuous noise, 24/7 (parties, shouting, loud music etc), next door to you, is much worse than irregular scangger outbursts like you may have seen- I wouldn't run quite yet, until you've established a bit more. Even if you could post the post-code, you might get more specific advice around localities in that postcode that should be considered/stayed away from.
Best of luck on your decision either way. I don't think there is a "right" answer- remember, if a landlord purchased the property you're about to buy, they'll likely fill it with tenants regardless of who's living across the road.

One more thing to consider.

When i was buying my first house many years ago, I looked at two estates near to the city centre. Both were in my price-range.

However, one was a 1970's build, had a bad reputation and didn't look at all pleasant. I'd say even structurally the houses were full of damp and bad materials.

The other was a 1950's well built council estate that had a bad name in the 1970s (even way before heroin took its grip on Dublin).
But when I was considering purchasing, I knew things had settled down there. It was mostly elderly people living there, the shysters had moved out or were in jail and young couples were buying up the houses and gentrifying them.

I knew at the time, had I purchased there it would be a good decision. As it happened I didn't, but many years later, that estate is beyond recognition from what it was and prices are a very healthy 500k for properties in need of complete refurbishment. The other estate? it's still a bad area.

Which one is yours?