It’s not in Armand’s nature to be simply happy. He has known joy and a sense of belonging at various points in his life; he’s even been in love. Currently he feels a sense of peace in being needed by those he spends time with.
Whether you ship Daniel/Marius or Daniel/Armand, I think Armand spends time with both Daniel and Marius; and feels loved to some extent by the whole coven. Armand likes to pull different members for trips to the galleries or shopping, but his favorite thing is lazing about the house playing chess with Louis or having a lively debate with David on art history, architecture being a favorite topic.
Occasionally he hunts with Lestat, where they can both feel a little more relaxed, away from the scrutiny of others (who actually encourage the friction w/o meaning to do so, just bc they’re afraid it will happen and keep making furtive glances at Lestat and Armand to the point where they do sometimes crack under the pressure and pick a fight over nothing).
If you wanted Armand’s current vampire happenings re: Prince Lestat, which I struggle to accept as canon YES EVEN NOW over a year later i know get out ma faaace here ya go:

[Art by @garama, text by @merciful-death]
Light spoiling after the jump.
According to Prince Lestat, Armand was living in a gorgeous old building (which, of course, he spruced up to his exacting luxurious specifications) on the upper east side of NY w/ Louis, Sybelle and Benji. Eventually Antoine (the unnamed musician vampire from IWTV, Lestat’s alleged 5th fledgling who had gone unmentioned up until PL) arrived at their door and was welcomed by all.
Throughout the story of Prince Lestat, Armand does little other than be supportive of Lestat, in a way that almost seems obsequious. Not much really happens for Armand, he rides out the whole drama pretty unscathed.
So currently he is pretty content with things and enjoying the company of Sybelle and Benji, and whoever else wants to chill with him.