Yes they will give you a hotel on that type of transit (def. in J & F anyway). Just completed a trip BKK-BAH-FRA and that included a similar stopover on the way back. FRA flight departed at 2.00am ish and we had arrived late pm. Voucher for the (excellent) Movenpick was waiting at the aforementioned transfer desk, which is a 3-4 minute drive from the terminal They provide transfers, room and dinner voucher. Superb service. Was travelling in First (A) class.
cool.. thanks.. - I've been to the Moevenpick already too, but that was on a BKK-BAH-ATH trip, with "real overnight".. - that's why I've been wondering. could be nice being able to use the Moevenpick's outdoor pool in-between the flights