✨ Excellent for long trips (as much as short trips, I'd imagine) ~
I stayed at L7 Gangnam for 3 weeks, and my entire experience was wonderful.
The hotel and amentities are overall modern and always tidy. The staff are extremely kind, helpful, and attentive.
L7 Gangnam is conveniently located near the Seoullung (선릉) subway station (few mins walk). I prefer to stay in this region of Seoul, as I personally frequent the Gangnam, Apgujeong, Jamsil areas often (and Seoullung is within 5-10mins of each of these locations).
The area is very safe, and also conveniently located by many cafes, restaurants, shopping malls (including famous spots like Starfield and COEX), convenience stores, etc.