Don't know whether this belongs here or in homes and gardens. But I might get a more honest answer here and/or advice.
Just brief background: we own our home, semi in urban area, our usual neighbours (totally lovely, now close friends) have rented their home for a year while they travel. After struggling to get tenants, they ended up having to rent their 3 bed to 5 people as a house share.
Generally, I have to say we have not once had any issue with loud music or any other dodgy behaviour from the new neighbours, so I don't want to complain unnecessarily.
However, at least 3-4 times a week (during the week, not just weekends), a group of them and their friends congregate in the back garden from around midnight until about 2 am. They are generally loud, have put up really bright lights and it's really difficult to sleep when they're out there. (They either wake us up, or we can't get to sleep coz of them.) I'm also 34 weeks pregnant (which they must have noticed) so it is starting to affect me. I'm also concerned that once baby is here, their noise could wake him up if I've just got him to settle etc.
Should we complain? And if so, to whom? The tenants themselves, the estate agent (this is what my DH wants to do) or our friends their landlords? I have resisted the latter because I don't want to bother our friends when they are miles away and spoil their year out thinking they have nightmare tenants, when apart from this annoying garden thing they're absolutely fine. It's just that after 3 months of it (rain or shine) it's starting to grate. A few years ago, we lived next door to proper ASBO'd anti-social neighbours who were drug dealing and annoying an entire neighbourhood, so I know what REALLY anti-social behaviour is. I don't want to rock the boat and exacerbate matters, but it's starting to get me down a little.
Thanking you kindly.