Lawson Sotetsu Grand Fresa Ariake — Konbini in Toyosu, Tokyo

This is a Lawson branch, and the thing that sets it apart is where it sits: on the second floor of a hotel on Ariake street in Toyosu, so the people drifting down in the evening are mostly staying in the building. The shelves behind the counter hold as much as a branch in the city centre, which is more than the hotel-guest trade alone would suggest.

The item to look for is the melon frappé, a chilled blended melon drink at 395 yen including tax, sitting on the shelf beside the fruit mix version. It comes with a straw, and the trick when you mix it is to pinch the straw gently as you work it up and down so it does not bend and split.

The shop is small, and there are self-serve tills alongside the manned registers. It is worth watching which till is moving before you join a queue.

Bentos are the other main purchase, and one thing to know is that a box can end up packed upright in the bag, so the contents shift. If you are carrying it back to a room, it is worth asking for it laid flat.

A snack or a bento here runs from about 200 to 1,000 yen, which is the ordinary range for what you are buying rather than anything marked up for the hotel. The melon frappé at 395 yen is the clearest example: a cold drink for a little under 400 yen.