Arpenaz Fresh & Black

I have this one too. For 3 people 7 to 10 days is doable but will be a little cramped. I find this tent to be perfect for two because it gives plenty of room to get up to pee while not waking up everyone and also the "lobby" of the tent will get very cramped with cooking utensils and the gear of three adults.

I had that in fresh black , inflatable . Plenty space for a family of 3.

Chance of rain for me means a larger tent with a living area where you can sit at a table and even cook in. Decathlon Arpenaz 4.1 F&B would be a great option. Afordable too and Decathlon has been making family tents for ages and I always found them excellent. They have a more expensive inflatable version but I really don't see the point of those.

https://www.decathlon.co.uk/p/4-person-camping-tent-arpenaz-4-1/4123/c98c241m8648383 Buy the cheaper one, I must be coming up to the ten year mark on mine. Spray waterproofed it a handful of times, packed it down wet, store it outside, not been precious with it at all. Survived torrential rain, wind and sun. Incredibly well ventilated. Very light for it's size.  If 3 of you sleep on the floor and use the front porch as storage for your gear you might be alright but for the length of time your talking id buy two at least. 

I love that tent, but I think it would be cramped for more than 2 people. If you're all comfortable sleeping right next to each other then it would be ok.

I have the 2 person popup (not fresh and black) and the Fresh and Black Arpenaz 4.2 4 person tent with 3 rooms. Popup is fine for the odd night, fits into car easily, very very easy to put up and take down. No way can you backpack with it, it’s a huge disc shaped thing. Fresh and Black Arpenaz is a game changer though you wouldn’t want something this big for 1 person. Sitting in it right now. Spacious and airy, and does a really good job of blackout. Would definitely go for that over the basic range.

I have 4, they're all brilliant, the fresh and black range was a game changer with kids, we have the air 4 person fresh and black and its great for my family, so far its about 5 years old used 3 - 4 times a year and still working and waterproof. I one of the 3 man pop up fresh and blacks which gets more use when I go without family and its solid, my oldest one from them is a decade old bought as an emergency Le Mans tent when my old eurohike gave up. I totally rate them over anything else in the near price range. The only ones that don't work are the super light solo hiker tent range, but they can be forgiven for that.