The place may not seem ideally located but is actually more central than it seems, at least for people who don't mind walking for 10/15 min. This part of the street is much quieter than upward, but you'll find anything you need in a 100m radius: supermarkets (7-11, open 24/7), pharmacy, laundry, restaurants, and massage salons.
The place is still at a walkable distance from the heart of Sukhumvit (Emporium and BTS stations: 15 min walk). Otherwise, taxi-motos or taxis will get you to a subway station or Terminal 21 in about 2/3 minutes.
The hotel is small but presents a huge advantage over many other facilities in Bangkok: it is brand new (opened in Spring 2019). All the equipment, including A/C, fridge and beds, are new and all is working perfectly – quite pleasant. Also, the staff is very welcoming, smiling and always ready to help.
Another pleasant surprise is how spacious the room was. After staying in so many places where I could barely fit my suitcase, it’s a breeze. The desk is not a small corner under a TV, but a real (and modern) table that could accommodate 4 people. The bed is also huge (and comfy). The Italian shower is perfect, and the A/C is a monster, so big it can cool down the room in minutes...
All in all, this place may be the most comfortable hotel I’ve seen in this budget category. It's spacious, convenient, and affordable, all advantages that definitely overcome the not-so-central location. A rare gem in Bangkok.