I went aboard a batch-1 when it was alongside recently.
It is no secret it is built to civvie standards so there are stairs not ladders, there is small-ship mentality (it is a little more relaxed in feel but dont get me wrong it is still RN). It isn't kitted out like a larger vessel, but it does what it is designed to do. Due to the UK Waters way they have historically been used, it is never away from the wall for terribly long so might be good for family orientated people but it TBC by the crew rotations.
I was a PO on the Bulldog - joined straight from Argonaut so came as a shock especially at night - no lookouts and on autopilot - cost the RN a fortune in replacing lobster and fishing nets ( although when the fishermen knew we were there some of them put out their old nets and then claimed new ones when we went through them (or not)) - but conditions after a Leander were sumptuous - 2 man cabins, massive mess for 7 SRs and JRs had a really good mess as well - because we had a sonar in an inflatable bubble underneath we weren't allowed out in anything over a force 5 (I think) - great great days
Last time I worked with a OPV it was in the North Sea in a gale winching down some of the RM's Shhhhh people for an op. It was surely bouncing around a lot. Would put it down as one of the hairiest winching sorties I have done. In fact had not been an op I dare say we would have aborted, the deck was moving around so much.
Good luck on your small ship!!! Quells I believe are good for motion sickness!!!